The main issue isn't sellers or platforms that don't support it, but rather the legal issues that sooner or later will arise with these kinds of deals and I'm only referring to countries or places that such deals are considered valid [the more people/platforms involved in the mix, the more issues you might face one day]!
I am also from a country where crypto is banned and government take strict action against anyone involved in buying and selling of crypto. So such option is not valid for us.
But if I have the option of buying real estate with my Bitcoin for investment purpose then I will stay away from that because Bitcoin is more valuable asset then real estate. The worth of bitcoin is increasing exponentially with time that's why it's better to hodl your bitcoin rather then exchanging them with real world asset like real estate.
It's a kind of blessing in disguise for me that crypto trading is banned in my country, I have no other option but to hodl my bitcoin.