I'd say getting older and having more responsibilities is a bigger part of it. When you're young and have lots of free time to devote to a game, a 100 hour game is no big deal. When you have a fraction of that time, you just don't want to deal with that. I'm equally wary as well.
There's definitely some change to the gaming scene, like all the cheap sales and freebies. Very easy to build a backlog of games while barely trying.