Why should I join a guild?
There are a few reasons to join a guild. First the war room. You think its hard leveling up characters? Well, the war room allows you to command armies to take control of other regions so your guild may gain power and wealth per hour.
Second its always nicer to play with a friend. Friends can help each other learn the game, and have fun!
Also, extra gold drops in the battlegrounds. Who can't use a little extra. Takes a little off of those taxes.