“This event leaves a question in me. If we know that Fiat is burning in our hands month after month, then why do you only think I should have 10%?”

I don’t think you should only have 10%. You should have whatever amount you want. I think my 80 year old father in law should have only 10%.

The biggest risk for him in terms of bitcoin is needing to sell during a bear market. Let’s say he goes all in Bitcoin now and in the next bear market it drops by 70% again and he has an unexpected health scare and needs money for care that my sister in law can’t provide and that he can’t cover with his pension and social security. That would be a bad outcome for him.

In my opinion 10% in bitcoin gives him the upside potential and likely preserves the purchasing power of his entire portfolio and more if he lives another 10-15-20 years but if the worst case scenario happens in the next couple years having only 10% won’t put him in a bad spot if he would need to liquidate some assets to pay for care.