20 years is a very long time, and I don't know what will happen by then or if I'll be able to hodl my bitcoins for the next 20 years. I am just certain that even before those 20 years, the price of bitcoin will appreciate greatly, and different ideas on how to spend or reinvest my money will come. Yeah, the future of Bitcoin is very bright. Looking at the mass adoption from individuals, corporate bodies, and the government, I can foresee that bitcoin will become a household name in the next 20 years.
I don't wish to bother myself about what I will spend my bitcoin on; for now, let me keep DCAing.