As games become more complex, bugs increase and play-testing becomes less effective. It's as simple as that. If you can't take that, and some people can't, then stick to older/simpler games.
Personally, I'm willing to deal with bugs as long as games are good. I crave complexity. Very simplistic games bore me quickly. Past generations were way too dependent on simple mechanics and I even started to drift away from gaming with the SNES. Fallout3 and New Vegas are two of my favorite games ever, despite all the bugs. The same with Dragon Age: Origins.
Some of the games you listed, like Borderlands 2, I'll take over most older games in a heartbeat. I'm looking forward to doing another NG+ at some point. Rage, while not amazing, was fun.
Just different tastes, I guess. I've been gaming since the Atari 2600 and I'm pretty pleased with the current gen. I don't play games as much as I used to, and I'm a lot more picky now, in that I'll get rid of a game that doesn't appeal to me quickly, where I used to finish every game I came across as a kid, but I do enjoy the genres I like very much.
