I'll clean up trophies after I play through a game, and go for the platinum if I like the game and it's not hard or too time consuming (quite rare, look in my sig)
I would call myself a trophy collector. It's satisfying when they pop. But I don't give a damn about hi scores, collectibles, character costumes.
It's another reason why I buy all multiplats on PS4, my trophy score is much better than my gamerscore.
PS, PS2, Gameboy Advance, PS3, PSP, PS4, Xbox One