Wow! Just wow!!
You must be a good orator and marketer to have convinced your old man to invest in crypto-currency having used Fiat much more of his life. I don't know the name of your country but if our older parents let's say from 60 yrs and above in Africa can give cryptocurrency a trial our Economy will boom but funny enough most of our youths still perceive cryptocurrency as scam.
Well you won't blame them as the rate at which people get scam around the world s very high and another factor that contribute to this thought is the lack of proper explanation and view towards cryptocurrency. Most times people often get ponzi scheme and cryptocurrency investment confuse because ponzi scheme are often platform filled with large promises of profits and most times scammers used this as a weapon coined with cryptocurrency investment and as you know humans and their greed, they usually get involved.