^I just don't like having twenty accounts for twenty different things. It's a pain in the arse keeping track of them all, and having different secure passwords for each one.
Plus, the e-mails about news-letters, updates, new features, and the ads they send off don't help. Along with the fact that you have to install their game management system which is usually a couple hundred MB of crap that tries to start up when your computer boots (YES i know you can stop this).
So... basically, it's extra computer junk, and I don't like that.
(same with Microsoft's windows live. I would also say "same with google accounts" because I swear I've had to update my password and account information 10 times with them, and I believe now you have to enter a phone number to get a gmail account, but they have so much useful stuff it's hard to be angry at them.)

Why does blue text appear every time you are near?