it would depend on the bar itself too, the atmosphere would make a big difference. i wouldnt consider going to a bar by myself anyway, just the idea of it is kinda depressing in itself. but i guess some people do it.
Dude! Do not go to a bar to make friends unless it is a sports bar. Otherwise, its no fun because people always go with friends to a social bar which means they aren't looking for conversation and will look at you like wierdo for saying hi to them or they go to pick someone up. If they're alone then that means they're going to drown themselves in liqour best stay away. You can go to dance club alone but never a bar.
that's sooooo true they're 10x hotter and at least they've got half a brain, well some of them anyway ... college is the place to be for teh ladies