Why do we buy all these toys?

Eli has lots of toys, they all either light up, move, talk or sing, etc.... We find ourselves trying to find the latest and greatest toy that you just know he will love! So as every other parent does, "Santa" brought him some more fun stuff!! Now don't get me wrong he likes the new stuff, but ever since he has been crawling around and exploring his world, he LOVE'S the door stops...of coarse!! I think it so cute and he knows where each and every one of them are in the house.....