You need law as things doesn't stay faithful and legal for the entire community, you leave crypto alone and unfortunate cases would definitely happen, there's gains and loses if something is freely exposed and some ppl would simply convert these processes in harmful activities that greatly benefit and harming the innocents, regulation is needed at a global level but that doesn't really match up with current positions from many authorities, there must a relationship for certain party for gains, so do regulation with all those collection of fees