It's not a big deal that you have a hard time finding games you like. There are more games around, games get more ad coverage than ever, and you're getting older.
Plus, if you really think about it, the games you go back to again and again are a tiny, tiny, tiny fraction of the games you used to play, or was able to play, as a kid. There's always been a ton of cruft to sift through to find the gems; it's no different now, but it seems worse since your tastes have changed.
Just relax, keep gaming for fun, and you'll find the modern gems eventually. It's not a huge deal and a bit inevitable, really; you simply have less free time to sift through the muck now that you're older.