"Normal" people don't get addicted to an OS. I mean, once you can launch programs and switch between them, the rest of the changes are small - I hardly sit just playing with Windows all day.
I've built/setup loads of Windows 7/8/8.1 PCs for people who were previously on XP - Other than a couple of initial questions, none of them have struggled or felt "addicted" to their previous OS.
Your problem is down to flicking between them, of course you will use XP since that's what you are comfortable with, you will need to actually force yourself to use a newer OS until you are used to it and learn rather than giving up if something slightly confuses you.