The on-screen and off-screen relationship between Triple H and Stephanie McMahon was said to be a major part in Chyna's departure, although there is no stated specified reason.
I for one hate that she left but, of course, I wasn't in her shoes so therefore I cannot judge. She, however, didn't leave wrestling altogether. She would compete internationally, continuing to make history by wrestling famous athletes like The Great Muta, The Great Kabuki and most notably Masahero Chono. Her 2002 Tokyo Dome match against Masahero Chono earned her the title of Nikkian Sport's 2002 Women's Wrestler of the Year.
Although she's no longer in the ring, I still consider Chyna as the No. 1 female wrestler in history. And even though, we have seen history made with other divas such as Trish Stratus, Lita and Beth Phoenix (second female to enter the Royal Rumble), Chyna will always be No. 1.
Thank you for reading my tiny slideshow. I hope you enjoyed.
(I am aware that these are things that people already know. It was just a slideshow to show my appreciation to the 9th Wonder of the World. No negativity please)