With cross realm, guilds are not even a necessity any more. F2P's do just fine without guilds. P2P are fortunate enough to have access to realID. However, now that BoAs are cross server it certainly does make it a lot easier to reroll on a new server if you aren't too attached to a certain toon. All you really need is neck/bracer/glove/belt/boot/ring and you are set. And many of those items are available from quests.
I would much rather play Alliance, but the queue times are so much longer than Horde.