This game focuses on single player enough as it is. Most story missions (except for three six dungeons) is entirely single player. Everything else is optional. There's too MUCH single player content as it is and many of the things you accomplish would make much more sense if you had done it as a group. As it is, most multiplayer content seems rather shoehorned in and that just makes me sad.
As for having a problem with the community, that IS a valid concern, there are lots of jerks out there, happens in any game where human beings play, just make friends and only play with them, or get a linkshell that's willing to do the overly abundant six pieces of necessary content. Oh, eight if you count AV and WP, but those aren't necessary unless you are doing side quests.