Its NOT coming back... I know, Even I think this is just a short additional breath of CPR into mining for profit as a hobby. I was really thinking about selling off my 40ghs, But now I'm thinking about keeping it just in case the price jumps so high it breaths a little life back into my piddly first gen asics for a few months before I get the sh*t kicked out of me like most us will!
Well, mine it while you still can, the difficulty will be increasing like madman since everyone will be doing the same as you do...