Well, I'm not exactly an older gamer, only been playing since the PS1/N64 days, but I'd say that games today are still very enjoyable. I'd say they're more enjoyable than a lot of the older games. I don't feel nostalgia for older games (pre PS1 era) so when I try them and find out that I suck at them, I get mad and just forget about it.
Granted, Mario Kart 64 is still one of my all time favorite games, but I have plenty of games today that I've really enjoyed and had a ton of fun with. Warhawk, inFamous, Ratchet & Clank, Resistance, Assassin's Creed...
EDIT: Yes, those are all PS3 games (one multiplat), but keep in mind that I just can't afford more than one console. Also, the only game that I've spent a lot of time with that isn't on the PS3 this gen is Halo 3, which is also a lot of fun. Add that to the list. 
EDIT 2: OMG, how could I forget LBP?
Okay, I think you get the point. 
