When I was a kid I didn't want to grow up because adults were too boring and complicated, and being a kid was cool. I lose my shet the first time I played Zelda OoT and found out that Kokiris are kids that never grow up and wanted to be one so bad. So, yeah, my dream came true... well, sort of. Not a very good thing, though.
Also, I always said to myself that no matter how old I was, I would never gonna stop liking vidyas and cartoons, no matter how much the grown ups told me that I would grow out of them and actually mature. That also came true, sadly.