I've been thinking about all my years of gaming, and all the games I've played. Earlier I was reading the entry at TvTropes.org about Tabletop Games, and looking over the list I was surprised both by how many I have played, and how many more there are out there that I haven't.
Games/systems I have owned:
Traveller, Classic & MegaTraveller versions
GURPS 3rd ed
The Lord of the Rings RPG
Star Wars RPG (West End Games version)
Twilight: 2000 1st & 2nd edition
Top Secret & Top Secret: SI
Dungeons & Dragons Basic & 1st ed Advanced
Basic Fantasy RPG
Marvel Super Heroes
BattleTech, CityTech, AeroTech
Mechwarrior 1st ed
James Bond RPG
Doctor Who RPG (FASA)
Games/systems I have played (but not owned)
Traveller:2300 aka 2300 AD
D&D via Marvel Super Hero rules (no, I'm not kidding)
. . . and probably several I've forgotten.
So for better or for worse, this is what I spent my adolescence doing. Do I regret having not spent more time hanging out at the mall or at somebody's house watching MTV? Definitely not. These games were fun, and I even learned a few things from them.
I have very little time for these now, and most of the ones I'd owned I have sold or given away. I've kept a few for nostalgia sake, and the possibility that some day I'll find a new game group to play with. Who can say?