I have not bought something with crypto, but when I have to buy something I convert my crypto in fiat and then I buy that thing. Actually there is no one in our country that use cryptocurrency for payment source. So that's why I have not bought anything direct with cryptocurrency.
Adoption isnt still available in every corners of the world which it isnt surprising that there would really be no available on using up directly with your crypto on buying something or getting some service etc.
Therefore, you wont really be having no options but to convert it to fiat first (which is mostly people been doing) before you could buy something that you wished for.
But in most cases on which people dont spend up their crypto because of the potential profits that it could give on future runs or long term thats why its unlikely to be used.