Actually, regulation is good. We do not control cryptocurrencies. We do not know what will happen to them in few years. People are investing and governments are afraid of massive suicides in the case of failure. The role of governments is to protect their citizen. Regulating trade is important. We live in a civilized world, therefore regulation must be applied in every area. There are many similar examples of regulation. Internet was not regulated at the beginning. People were able to download freely musics and movies. Now they still do it but it is more or less regulated. Every new technology or new invention needs a regulation. It is the only thing which make us civilized.