We should not necessarily presume that people are going to necessarily want to pass down their wealth, even though they might not mind having extra wealth at the time of their death because no one can really know how long that they are going to live and a lot of folks fear outliving their wealth... so there can be quite a few comforts that come from being able to at least not being extremely worried about money in your old age... sure maybe there are going to be some discomforts with greater than expected needs for budgeting, but the restrictions in the amount spent might not end up being overly taxing on the person's comfort if they might have already accounted for the possibility that they would not be earning income from work after a certain point in their lives.
It's true that nobody knows how long they will live and some people worry about running out of money, but we should also think about the good things that can come from passing down money to our children and grandchildren.
Some people have the nature they keep the money safe and never give to anyone until they die.
Let suppose a person have invested in Bitcoin and h/s suddenly gets die and no one knows about his/her investing. So where these will be gone?
In conclusion an old person who has the money so h/s should give money to their childrens who know better where to invest.
It's normal to worry about running out of money as we get older. But we shouldn't ignore the good things that can come from giving money to our family. It can make us feel safe, leave a lasting memory of us, and help us when unexpected things happen. So, it's reasonable and smart to think about passing down our money.