Not sure why, but last week he finally told me he wanted to try it. So we setup his software wallet and he bought 0.01 BTC. Not sure if he'll buy more, but I can certainly say I'm proud of him!
Kudos to you for getting your father involved in Bitcoin, but one thing is very important as you have already invested 0.01BTC encouraged by your father. You have not mentioned in which wallet you have kept your invested bitcoins, now I will give you an important advice from my side, if you store your invested bitcoins in exchange wallet / online wallet, then you should remove your invested bitcoins very quickly. You should store your Bitcoin holdings in a Cold/Hardware/offline wallet. Because at any time the Bitcoin stored in the centralized exchange wallet can vanish.
Did you manage to convince your dads or other older people in your family to buy BTC?
At the moment I have not asked anyone to invest in Bitcoin but I asked my 68 year old Malaysian expatriate uncle to invest in Bitcoin a few months ago. He confirmed to me last few weeks that he invested $4000 in Bitcoin. That was my last bitcoin investing advice.