Out of curiosity what made you leave Apple (or consider it)?

This is coming from a former die-hard MS guy turned Apple fan boy. It's like Apple took what I love (*nix) and just made the best desktop experience for it. Yeah, I hate the prices but even the hardware is unbeatable--what I've seen so far that is.

However, I'll always still be searching for a true Linux desktop OS and appropriate hardware for it that doesn't feel like it will break if I carry it around with one hand while open.