I for one, will never use iTunes, ever. It's the most bloated, bug-ridden piece of garbage I've ever seen. One cannot even install Apple's QuickTime without iTunes. Ta' hell with that. I don't need Apple's software.
Oh yeah, do you need to play QuickTime videos but do not want to install Apple's QuickTime/iTunes? No problem! Use QuickTime Alternative instead. No bloatware. No hidden services/processes running in the background. No nonsense. Why not try it?
The same goes for RealPlayer videos, just use Real Alternative. Again, no annoying bloatware. No hidden services/processes running in the background. And again, no nonsense. While you're at it, why not try it out?