55 now, played all sorts, starting with a ZX Spectrum.
I focused heavily on FPS for a number of years, and ran a CS team for a while. 5 years in WOT. Been very much put off competitive multiplayer by the attitudes of just too many of the players (e.g. the hackers (CS), bots (WoT) etc).
Took up flying with Elite first, at least until they killed it with new updates that made the gameplay worse and not better. Moved onto DCS and that is just something else. It's like peeling an onion, i.e. learn to fly, then learn to follow flight procedures, then learn how to use various systems/weapons. Then introduce cooperation with team mates, then try putting it all together in a combat environment. Deeper than many strategy games in many ways, but still requires both coordination and tactics.
Has not only the challenge, is incredibly rewarding. The nice final point is that once you get past the "noise" of the "entitled" on the forums, has a brilliant community, and some really good squadrons.