It's not your fault - back in the late 90s when I came to light side I hated iTunes too. It's clearly stockholm syndrome - I deal with it because I've grown used to the way it does things. It isn't bad, but it does take getting used to.
Quicktime, well, I can't see why you'd hate it (except for maybe that it probably sucks on windows) - it's actually amazing on the mac. Lightweight, fast, everything a user needs and nothing else.
I use iTunes on both Windows and Mac for dealing with iPads, podcasts and grabbing stuff off of iTunes U and it sucks just as much on both platforms. It might be a great music player, but when they decided to make it a kitchen sink app for handling all those non music listening tasks just mentioned, they ended up creating a usability nightmare.