Even in it's current beta state, the game has more content and fewer bugs than games that have already gone retail, and the bugs that are there don't interfere wtih the gameplay itself.
I know the feeling of a bug that "... will be fixed in an upcoming patch..." but never is; As a Scrapper in City of Heroes, there was a bug that would spawn minions and bosses in the instanced rooms that were much too strong for me to take, and I would have to wait until I levelled up a couple times before I had a solid chance of taking them on. They said "We'll be releasing a patch soon that will include a fix for such-and-such bugs (including the one I was having a problem with) as well as some great new content (like being able to modify your costume later in the game)". When they said "soon", they hinted at only a couple weeks, yet a month and a half passed before I decided I didn't like the game any more and cancelled my account. They released the update about a month after I quit, if I recall correctly.
I trust that Blizzard will take care of any issues in better time and fasion; They've been a solid company for so long, they have no reason or incentive to grap out on their playerbase with this game.