Not much of a use for Bitcoin rather than investing, as cannot be used or traded easily for fiat currency.
Me, too. I use Bitcoin is mostly for investment, never try to buy any goods or services with Bitcoin. Moreover, using Bitcoin or any crypto coins for payment tools is forbidden in my country. So, we have no chance to use Bitcoin for any purposes, except as a digital asset.
Once you have bitcoin, then no one can stop you from using it for peer to peer transactions, and they may or may not be able to verify that you had used it in such a peer to peer transaction.
Of course, if you live in a country (jurisdiction) in which it is illegal to transact in bitcoin, then you need to account for the various possible risks of getting caught in such an activity that is legally prohibited...
It seems to me that one of the concerns that a lot of normies have is that there may well be limits in which many or most if not all would not want someone to tell them whether they can engage in such activity or not - which includes the ability to communicate with others (of your own choosing) and also being able to transact value with others of your own choosing with modes of transaction that are of your own choosing...
so whether or not those kinds of laws are just or enforceable could surely be subject to pretty rigorous debate - and the answer would not be clear about whether certain kinds of your interactions should be controlled (even if it could be controlled). Bitcoin does seems to scare people who would like to be able to control your behaviors in some of the kinds of ways that seem to be overreaching, even if some of those same people may well claim that they are "doing it for your own good" or "doing it for some kind of a socially acceptable/justifiable reason."