Those numbers are exactly why people don't bother to mine on NVIDIA cards.  Since the halving and with the pending shipments of ASICs, many GPU miners are walking away completely.  Unless you can get free electricity, GPU mining will not make a profit, and even if you can get free electricity, the wear and tear on your rig might not be worth it.


There are still a lot of people who support bitcoin not just to make money (though many of the people who support it have made a great deal of money by getting in early).  For them, securing the network is the incentive.