1 btc in my country is huge enough, and it will be more huge in the future seeing its price continue to appreciate year after year.
At the moment I have not thought about passing BTC to my son. Currently,
I am focused on providing the best education for my children so that they are able to compete for life. This means that he will not be distracted from what I have inherited for him. Whatever the number, if the generation you give is able to manage well, I think it will continue. Although we also do not have certainty about its value and its durability as a digital currency in the future.
I would add something to that point, which is something that usually all rich people teach to their kids: how finance and money work. Many people mix up education and intelligence, they are two different things, and to properly manage money you need to understand stuff they don't teach at school. There are many smart people that are broke.