It's a fair question, and I take it as a genuine one. Here's what I think.
I've played all sorts of games.
D&D, AD&D, D&D 2E, Gurps, Fantasy Hero, Call of Cthulu, Paranoia, Harnmaster, D&D 3E, D&D 3.5E, Pathfinder, DCC, D&D 5E ... lots of other ones too. Each game has a different flavour ...