What will you do if after losing several times in gambling, you are left with only small amount of money and that money will be for your fuel or for transportation, will you still continue with the little you are left with? What if you lose?

I was just wondering since i dont know much how blockchain really works. If mining stops, i read it somewhere that there will be an estimated amount of bitcoin in circulation to be reached then producing bitcoin will stop. My question is, if the targeted number or amount of bitcoin will be reached and production will stop, will the said amount be enough for all bitcoin demands worldwide? Thanks for your would be explanations.