It started in 6th grade....
Ran 1e for about 8 mos out of transcirbed composition notebooks
Teenage Mutant Ninja Turtles (played 1 game)
2e came out, tried it for about 2 years, got sick of it, but kept buying books (completed first campaign from 1e, many other abortive attempts)
Strar Trek 1e FASA version.
MERPS
Shadowrun
Rolemaster
Developed 1st version of my own system (D1000 yeah!) Finished 2nd campaign
Played everything around for a few years (Vampire,Deadlands, Earthdawn, The End, Legacy, etc) three new versions of my home game (abandoned percentile/decimal system)
The turning point:
Played CoC, Ars Magica, Wasteworld (practically a d20 game) , but continued to run my own rules system.
3e came out and I was brought back into the fold. I still entertain the idea of releasing my own rules in a few years, but 3e/d20 makes me happy for now.
It's been a lot of fun, and I'm really glad 3e came out. It was starting to feel like us roleplayers had no common ground anymore. My old groups were pretty insular, not wanting to mix. Even though I had about 30 players, they all played different games (except for my system).
If I'm rambling, it's because I just woke up.