I've been role-playing off and on since the early 80's as both a player and GM. I got started playing D&D and AD&D, but Traveller was always my favorite.
I currently play in semi-regular games using D&D (4th, 5th, and Pathfinder Editions), "Barbarians of Lemuria", "Supers!", and when I can find people to play with me, "Traveller" (Either Classic or Mongoose). I've also occasionally played "Savage Worlds", "Fate", "Gamma World", "Big Eyes, Small Mouth", and a few other, more obscure games.