Have you seen an old man without an heir but has a reasonable amount of bitcoin, not too many, just enough???
There are people like that out there, I have heard of one, seen another, the old man has a heart condition and he just wants to rest, this things happen, mosts of his funds are in charity, he just wants to live out his days peacefully, his investment were done by another person, not something I would advise anyone to do, but his investments were done by another person, and now he has sold everything and just wants to live out his days in peace. You can't just rule out the possibility of these things, things happen.
Not having someone as an heir is not impossible because so many things in life is about choices and some persons might just feel they are better of if they are just the only one or some sad circumstances made it unfortunate for them not to have anyone around them, but however that's not even a reason for us to have a conclusion that anybody found to be on that situation will not like to continue investing or holding for longer time on Bitcoin because even if they decided to sell is still the same circumstances if they hold it, however a lot of people feel fulfill having people succeed from there empowerment through there Bitcoin they invested for years.
Actually it is really that hard to believe that someone doesnt have any heir or relatives on which he could be able to pass those coins that someone that had been accumulated and holding up for so long. If that person do have that love on charities then donating his coins for the sake of that charity then its his total decision and there's nothing we can do about it. Come to think that even into those who do have heirs on which a certain individual would really be that still hesitant on passing those into his/her loved ones. Whatever the reason behind of being alone then it will be something that personal. We do have all the full rights on what we had accumulated but majority or most of the time for us husbands/fathers out there then it will really be that everything because of our own family and into its good future on which this is the reason on why we are doing these things. Going back into the topic about buy the DIP and HODL! Then this is something on which not everyone will really be that able to do so specially when they are seeing that prices are really that declining very fast or simply you are just that new into this market space and doesnt have much experience and knowledge about this one.