lol rofl hahahahaha
1. i'm just guessing your an ignorant mac user that couldn't figure out a windows or linux os so you got a mac because the os is "user friendly"
2. go to the pc game isle at your local store, see all those games that have "games for windows" on the top of the case? guess what? YOU CAN'T PLAY THEM! (through OSX) not to mention theres other games out there with out the "games for windows" that only work on pc
3. custom pc's blow your mac out of the water in performance
on topic though the chance you get hacked with an authenticator is really low. anything you lose they will replace when you have your account back, it isn't a problem. also you might want to consider changing your antivirus program, they are NOT all the same. i recommend either bitdefender if you don't mind paying annually, or AVG if you don't want to pay for anything