First off, if you are in your forties, then you are young enough to not be intimidated by technology, and if you are older, and reading this, then you are not intimidated either.
My first console had two knobs and it was called Pong. Then the Atari 2600, C-64, SNES, PC, and Xbox 360.
I'm an avid gamer at 44, and plan to keep on gaming.
I'm all for casual games, motion control, mobile gaming, and Facebook games. Anything that expands the ranks of the demographic we can call "gamers" is good. For me, though, I need a trigger and ammo. Rage is my next big game. I'm playing a lot of Borderlands, Fallout: New Vegas, Team Fortress, and Civ 5 these days.
I also like to fall back on classics like Alpha Centauri, Dungeon Keeper, and Doom.
I own a 360, and I prefer it for sports, racing, and GTA style third person play. I have a powerhouse PC where 100% of my First Person Shooter action happens, as well turn based and real time strategy gaming.
Sadly, MS Word and Excel get a lot of "play" too... But that's a function of getting older I guess