While the Mets have only reached the pinnacle of baseball on two occasions since their inception in 1962, the Marlins have managed to win twice since 1997, even with disbanding their teams on multiple occasions.
They have managed to acquire players who consistently agitate the Mets and defeat them on the field.
While the Philadelphia Phillies were originally the source of hatred for Mets' fans, the Marlins may have overtaken that spot over the past couple seasons.
If there is any silver lining, the Mets have finished above them in the standings the past two seasons, but that hardly erases the negative memories in recent years.
Here are five reasons why Mets fans despise the Marlins.
As painful as it must be to root for a team that dismantles the roster just one year after relocating into a new facility and convincing the fans that it is committed to winning, at least ownership has a track record of winning.
It is easy to forget that the Marlins won the World Series in both 1997 and 2003. One of those years, most Mets fans probably even rooted for them to win.
Since that time, however, the Marlins have broken up the core of their roster more often than a boy band in the '90s. They show a disinterest for the best interests of baseball, ranging their payroll from as low as $15 million in 2006—less than that of Alex Rodriguez's annual salary—to $118 million entering 2012.
Keep in mind, they finished that 2006 season well above expectations, which was enough for Joe Girardi to win NL Manager of the Year.
From the perspective of a Mets fan, it is curious how they can gut their roster at will without having to suffer through the years of being burdened with heavy contracts, and they can restock their system instantly. They are able to manipulate the market by handing off their heavy contracts at will.
In the years that they decided to win, literally nothing was off limits. That included stealing beloved Mets shortstop Jose Reyes by offering him a contract of six years worth $106 million.
Their periods of rebuilding have been pretty rapid as they have taken teams composed of rookies and castoffs into September runs, while the Mets annually fall apart in the second half.
It is painful to be relegated to waiting for expiring contracts in 2014, while the Marlins have been able to throw their problems out the window and begin fresh.
It's also an easy way to have MLB turn against you.
Since their inception in 1993, the Marlins have played their home games in stadiums named Joe Robbie, Pro Player Park, Dolphin Stadium, Dolphins Stadium, Land Shark Stadium, Sun Life Stadium and now Marlins Park. Those all took place in two buildings.
Despite making themselves seem incompetent in the public relations and marketing departments, the Marlins have always been tough for the Mets.
The Mets lead the all-time series 165-153, much closer than it should be considering the difference in markets that the teams play in, and the Marlins have fielded minor league rosters in a number of those years.
The old stadium was extremely spacious, with the 434-foot mark in left center field often causing a world of problems for Mets outfielders.
As a matter of fact, left field caused one notable blunder as well.
Even with their tremendous payroll advantage most years, the Mets have had many nightmarish memories against the fish. In 2009 and 2010, the Marlins won 23 of the 36 matchups.
The new stadium is certainly unique.
One of the worst memories of the year occurred there when Frank Francisco suffered an epic meltdown and Giancarlo Stanton ended up blasting a walk-off grand slam in extra innings in what may have been the worst loss of the season for the Mets.
The trip to Miami has often resulted in gut-wrenching losses for the Mets, painful for the diehard fans to witness.
This was the series that felt like the funeral for Shea Stadium.
The Marlins, despite being eliminated from postseason contention, found the motivation to fight the Mets tooth-and-nail to the finish line.
The Mets, once again, were on the verge of coughing up a comfortable September lead to the Phillies.
Following the script from the previous year, the Marlins won Game 1 to put the Mets' season on the line with two games to go.
The next day, the Mets benefited from Johan Santana pitching one of the best games of his career—a brilliant three-hitter—to briefly restore the hopes of the franchise.
On the final day, Oliver Perez threw a decent game, but the dreadful bullpen choked when it mattered. Scott Schoeneweis and Luis Ayala surrendered back-breaking home runs to kill the hopes of the fanbase.
Of course, the Mets held a ceremony for the final game at Shea Stadium, which was the equivalent of putting a ribbon on a piece of manure.
This series was the root of the hatred between the Mets and the Marlins.
The Mets had ran through the National League for most of the season, but began to struggle mightily in September, coinciding with the hot streak of the Phillies.
The Marlins, long since eliminated from postseason contention, were hell bent on drowning the Mets' hopes.
The teams split the first two games, with the real story being the brewing animosity due to Lastings Milledge flaunting during his home-run trot.
There was a fracas on third base between Miguel Olivo and Jose Reyes, which was the classic "wake the sleeping dogs" scenario.
On the final day, Tom Glavine, a 300-game winner, pitched arguably the worst game of his life.
He recorded one out and allowed seven runs, effectively ending the game before it began.
It would've been easier to digest if Ramon Castro did not hit what appeared to be a grand slam in the bottom of the inning, which ended up to be a mere fly out.
Marlins manager Fredi Gonzalez acted as if it was Game 7 of the World Series with his moves.
He used six pitchers in the game, removing them at the first sign of trouble despite a 70-91 record.
This was painful in every sense of the word—a collapse complete against a division rival who was taking a great deal of pride in handing the defeat.
Mets fans will not forget this one for a long time. Things would be much different had this game gone different and Tom Glavine pitched the way he knew how.
“They boo their own players, so we like to come here and beat the Mets…as soon as I get out there and see all the fans booing and cheering, we just laugh every time they boo their own players. It’s weird," former Marlins player Hanley Ramirez told the Palm Beach Post.
While he was the most obvious offender, it was clear the Marlins took extra pride in beating the Mets, even if it meant stirring up a rivalry.
They also were noticeably unhappy with the on-field handshakes that the Mets players took part in, particularly Jose Reyes and Lastings Milledge.
For whatever reason, even though their talent level did not allow for it, the Marlins were able to play their best against the Mets when it really hurt the most.
In recent years, they have continued to beat them in the most painful ways possible, while disrespecting the Mets.