Reader Ian C. wrote in with an interesting thought. He says that if he was offered a spot in the Wrath of the Lich King beta tomorrow, he'd probably decline. With the news that the expansion is in alpha and that an open beta is probably not too far off, it seems like everyone and their brother wants in early to Northrend. But not Ian -- he says that he'd rather experience the content on the live realms.
And I mostly agree. I never played in the BC beta, and generally I like to stay away from the PTR if possible -- any progress that you make on test or beta realms is completely lost when the beta closes, and while yes, there are some fun reasons to jump onto the PTR or a beta realm, I'd rather experience the content as its meant to be played when it comes out.
Everyone else might be excited to see the beta, and of course we'll have lots of information as it comes out about Wrath (which means if I'm invited to the beta, I'll probably load it up just to see what's there and try out the Death Knight mechanics), but playing on a beta realm isn't the real thing. Any progress you make there is more or less a waste of time -- I'd rather see Northrend in a finished form, through my character on the live realms.