i think the whole point for many is freedom from tyranny. just because there are laws around how you're allowed to store and move around things that you own doesn't mean those laws are morally or ethically well-founded.
"Tyranny" has a negative connotation to it, but cultures vary, laws are not universal, and also people have different values - if you live somewhere where you can't otherwise transact, a private cryptocurrency may be a way out for you.
