I think the calculation of bitcoin prices reaching zero will not occur in the near term, bitcoin is still an attractive coin and more likely to survive in the long term, think positively and not have to worry too much.
The motivation that you do deserves to be disclosed, indeed, don't think that bitcoin will happen as expected. I strongly agree that until now bitcoin is still the best and long-term investment. there is no need to worry about things going to happen to bitcoin until zero, it won't be possible.