Older generations vs Bitcoin

I'll start by saying I wasn't trying to orange pill this man, just getting his thoughts.

Was on a business trip with the company owner recently so had a lot of time to discuss things we wouldn't normally, one of them turned out to be Bitcoin.

He is of older generation ( around 65 years old ) and his primary issue is lack of recognition by institutions, lack of tangibility and doesn't understand where the security and value come from.

I got around the security and value and explained on the returned flight home - he understood.

But,

The lack of recognition by institutions ( currently ) despite US and EU and many other drafting legislation, this is still not a well recognized asset.

What do you say here ? Conversation looked somewhat like this :

I can't take my Bitcoin and go buy a house... No you can't, but you also can't take gold, shares or stocks and go buy a house, But if I own stocks or gold the bank will recognize their value, they won't with Bitcoin,why? Because they're afraid Why would the be afraid? Because they can't control it. So it's a Ponzi scheme?

I know it's directly the opposite to Ponzi scheme but how does one lead this conversation with older people. It comes up more and more. And it's always the same outcome..