If mining isn't profitable, how come people still are mining with GPU's?
Some people are still mining with CPUs, I'm sure.
Reasons (all a risk) for mining with GPUs, I assume:
1. Even if paying for electricity, you are still today making more than electricity costs of running GPUs. This does not account for hardware costs. I don't know where the tipping point is but I think somewhere with BTC dipping below $50, at current difficulty.
2. Not everyone pays for their electricty.
3. You can be losing money today, but believe that BTC will some day be worth $100, $1000 or even $10000.
4. If you can't do math but everyone's hyping about it like they are, you can believe it is all profitable.
5. It is still possible (just not probable) that difficulty will go down. And GPU mining will be rejuvenated again.
etc etc