I'm the kind of person that admires good looks, so for more than 20 yrs I have "accumulated" this kind of crushes on people, with some of them the feeling was mutual. But up until now I still feel almost the same, even though I don't necesarily keep contact w/ them. Well IIN?

It happens. I think its normal. But I don't think its normal if it gets to the point where you're either stalking them, or it runs your life, keeping you from pursuing anyone new because of a crush thats growing into really nothing(being that you no longer are in contact with them.). If you want that crush to grow into possibly something nice, call them up and catch up like old times.