I completely understand. I think what is giving everyone so much heartburn is we don't actually know how long this beta will go for. It sucks to sit on the sidelines while other paying customers get to roll around with their new monks, especially when we have no idea when our invite is coming and how long we will have in there.
I participated in the ORIGINAL WoW beta, before vanilla, etc. I, like an idiot, canceled my account in the middle of BC. When I started again before Cata, I simply created a new account. Therefore, my sub only goes back to Nov. 2010 =( I signed up for AP day 1, but unfortunately, my sub from WoW day 1 doesn't give me any credit here.
I know that we are not missing a TON in beta right now, but I am tired of the existing content and D3 isn't out yet, so I have no interesting games to play - so I want to try a monk. Alas, I just have to wait more. However, I am 100% confident that I will get tired of beta after a week, anyway.