My suggestion to these set of people is that we should invest on Bitcoin for our children from infantry to teenage. In my country people starts planing for the future of their children from the moment the child is put to bed. Family and well wishers gives money to the child when they come to visit the new born baby to express their happiness for what God has done. Some parents the moment they give birth to a child they open a bank account for the child so that every month from their income they put some fraction of money to the child's account. Some money been given to the child during his birthday celebrations and other ceremonies or visit they always put it into the child's account in other to secure the child's future.
Investing for the long term is not easy, that is why we need to think of something which will encourage us to do it and one of it is to help secure the future of our children. For those old parents, their kids are already grown up and not an infant anymore but it does not mean that they can't invest on Bitcoin anymore. They still can in preparation for their kids college education or also in preparation for their retirement so that they can get something even if they don't have a work anymore.
I know they also have retirement pays but it doesn't occur too often and then the amount of it may not be big enough for them to enjoy and also to give some help to their kids when they are struggling financially.