I'm a new miner only rocking a single 5830 and getting twin 6950 2gb cards. I jumped in because I wanted to make a buck and upgrade my video cards. I do think bitcoins have a future , But I'm not sure if this version of bitcoin will be the future. There are things about the setup i think that need to be improved to gain wider acceptance beyond the geeks.
Until then my cards will keep mining as long as its more profitable then the electric it eats.