Just imagine when Bitcoin is 150 years old, where its price will be and how many people will possess any Bitcoin.
I'm not even thinking Bitcoin for the next 50 years, the world is changing, so is the technology, we never know what's going to come next, I'm not saying there will be better than Bitcoin, but what we have now is something beyond our comprehension 40 years ago, I will just enjoy Bitcoin in my lifetime and let things takes care of itself