I'm in my 40s. I started playing D&D with 2nd ed. Played a lot of that, then a lot of 3e, then a lot of other things. Dmed warhammer campaigns, warhammer as a system pseudo earth campaigns, star wars campaigns, played gurps, exalted, Hero 5e, star wars, iron kingdoms, traveller... 4e experience was very limited.
In the more recent past, I ran a 5e game for almost 2 years, now I'm running a troika! game in the UVG setting. I also ran a GLOG campaign. I'm playing in a pathfinder game (2 alternating campaign). I have never played 5e as a player unless you count play by post games, which I gave up on after a while .