So since every coin I hold can be considered profit, by not cashing out I'm continuously making someone else lose, and will continue to do so until I do cash out? How can that be?
I'll tell you... the real losers are going to be those who stick with fiat until it is too late.
only if you are the exchanger or mining bitcoins your self.... if you are holding bitcoins their number is not increasing, if you have 100 bitcoins now, you will have 100 after 10 years, where will be your profit then? the only profit you can make is to take money away from other people at the right time...
Actually wait... isn't it demand that drives up price? The more people that want BTC the more scarce it becomes. The more scarce it becomes the more it is worth. No actual money is lost in this respect. Technically speaking everyone can win as long as the price keeps rising. People lose money by selling when the price goes lower than what they paid for.