Your last sentence summed it all up. You can't run your life with other people's intentions in mind. Be who you are and what you want to be, no matter what people think of you. Ultimately, you'll be happier that way. You may make your friends happier for a limited amount of time, but wouldn't you like to be happier on a regular basis? Do what you want to do, fuck what other people think.

I'm not quite sure how WoW ties into all this, but you need to play less of it. Being addicted to ANYTHING isn't good. You need some balance in your life. Maybe set aside a time a day (or less) for WoW. Schedule your life around the important things you have to do, not WoW. Try to make your day busy so you aren't tempted to get on WoW and sit there forever.