If we already have a comfortable life with other sources of income and are satisfied with our current standard of living. Accumulating and holding bitcoins for the next generation is a good thing because it is also a form of inheritance. But if we are still struggling with our current life, our children are still living in poverty, then holding bitcoin forever without selling is really a bad idea.
Let's not forget that the goal of investing in bitcoin is to improve lives, not to turn it into a cult to worship or admire. If it were me, investing in bitcoin would be useless if I had to live a difficult life all my life and my children wouldn't have a good life. So at some point when I reach my goal, I will not hesitate to sell all my bitcoins to take care of my family. Family and present life are more important than anything else in the world.
Yes, if we do not need bitcoin to survive, then there is no practical reason to have anything going for us, it's just a normal situation to be in. I mean why sell your bitcoins if they are growing and you do not need them at the moment?
If I die without having spent any of them and showed my spouse or my kids how to cash that out when I am dead, then they could just use it for themselves and it would be fine for them. I am not fearing anything about that, but if you are a single person then things could change.
Not everyone ends up marrying, or have kids, some people die as single without kids, they could be never married or maybe divorced but it's the same result, and we should focus on how to grow further without a doubt. I believe the best way to move forward would be just focusing on where to find courage to spend it, but if you are all alone, then why not just cash it out and spend it while you are here, since there is nobody to leave it to.