The question's been asked on Reddit and it got me wondering why my own alt of choice (for the moment) is currently unguilded. It couldn't take much more than a polite request to jump on the guild bandwagon and get my hands on those yummy, yummy perks. It would stop the regular requests I get to join guilds (even if you've turned off guild requests, you do frequently get whispers) and it's not as though I'm in a demanding guild at the moment. And yet when I don't feel like doing much (or dealing with others), I hop on to my alt to solo for a while.
And what about you, fellow players? Are you guilded or unguilded?