You are right, for elderly people over 70-80 years old, age can be a big barrier when we recommend bitcoin to them because to be able to profit from bitcoin, they need to hold bitcoin for at least 4 years if the cycle is repeated. So I think when recommending bitcoin to them, we should emphasize that bitcoin investment takes a long time and let them make the best decision for themselves.
If my grandfather also likes to invest in bitcoin. I am willing to use my own money for him to experience because at my grandfather's age, money is not the most important thing.
Yeah actually it may or may not be a barrier to them depending on their purpose which they may intend for it, some persons at that age could be looking for an avenue or a platform were they could invest their money in other to secure their children future because most persons at that age may also have ground children which they loved, so referring them to Bitcoin will help them utilize the opportunity of investing ahead the future of his ground children with the belief that before they will come of age it would have yielded a good profit. This is also similar to a man I heard that bought some amount of Bitcoin for his children future, at least with this they would have something to start with when the time comes.
In otherwise it becomes a barrier Recomending Bitcoin to 70-80 years old because before they will start profiting it may take a long time of holding considering how volatile the market is and time may not really be on there side considering there age.