I think a lot of PvPers feel as you do. I think, by its nature, PvP is a solo oriented activity. I got into it to avoid guild drama and begging for groups when I started (before LFD), and I became more dependent on myself.
But, Raist, MMOs… blah blah. They cultivated players to play that way and, when you’re trying to coordinate your team it’s very much an MMO activity. Problem is the “my way” philosophy that we’ve seen in the face of those earlier limitations and their effect on the population.
PvE isn’t so bad. Read up on the dungeons if you’re uncomfortable. Put the tank on focus, follow them and target off of them. If you take aggro run them to the tank. Research your rotation, get addons to tell you when to move, and progress through lower keys until you feel comfortable.