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.
Age sometimes doesn't say anything, but there are many old people who really have difficulty using the phone, the internet, how can they use bitcoin. For example, my parents have only been exposed to smartphones and the internet for the past 2 years, they seem only to know to make and receive calls, sometimes entertaining with youtube. Other than that, they don't know anything else, and even though we tried our best to guide them, they barely understood anything.