Why are the results of the Coinish Bitcoin calculate so grim?
I started around March with 2 GPU's. My electricity is free and bitcoin price has tripled since then. I still haven't come close breakeven.

Back then I knew it would take a long time, and I knew the ASICs were coming. I did it purely out of interest and fun.

There really is no other reason to start GPU mining now. Even with everything free, it's just wear and tear on the hardware.

So the answer is: that calculator is probably right. Math doesn't lie, I guess.