I like them personally although I couldn't say that they are really "a good thing" for gaming though they certainly aren't a bad thing either.
It used to be they were a good indication of which games I really enjoyed more than others as I would try harder to platinum those games though that isn't really the case anymore as I have a fair few platinum trophies for games I don't really like but were just too easy to get(Star Trek is a good example)
Basically if I think here is a decent chance I could get a particular trophy then I'll likely go for it, I like having extra incentives when I'm replaying a game even if they are ultimately meaningless. I've never played a game JUST to get the trophies.
It used to be they were a good indication of which games I really enjoyed more than others as I would try harder to platinum those games though that isn't really the case anymore as I have a fair few platinum trophies for games I don't really like but were just too easy to get(Star Trek is a good example)
Basically if I think here is a decent chance I could get a particular trophy then I'll likely go for it, I like having extra incentives when I'm replaying a game even if they are ultimately meaningless. I've never played a game JUST to get the trophies.