I don't be conscious of how this is going to work out for old human beings who cannot even know private/public keys let on my very own hot/cold wallets.
We should not judge them based on their age, if they can use the internet they can adopt Cryptocurrency and Bitcoin, the industry has evolved to make it easier for everyone to trade Bitcoin, just as the internet has evolved so everyone on this planet can use it anywhere and at anytime.
I have a hard time understanding what bitcoin was when I was starting out but the abundance of tutorials and tools to use to buy, sell, and Hold Bitcoin.
It can generally be said that anyone who can use the Internet can use Bitcoin. But in my opinion, the elderly, even if they can use the Internet, they cannot realize that using Bitcoin is easier than using other financial systems. They imagine that it is greater than their level of awareness.