I think it's just getting older. Some play is rehearsal for real life. Now I can run a real company, make real money and become a real millionaire instead of a pretend one (or at least try to).

Plus I'm going to die unlike when I was an immortal teenager, so I want to retire ASAP.

If I'm going to game it'll be an FPS or similar when I'm too brain dead to play when-will-i-be-a-millionaire.