Digital currency is to change the world, many of which were positive, to a certain extent, they pose a containment of the government, gave the people an alternative, but that doesn't mean they don't need to be regulated.
One of the core reason is: anonymous, do not track, not regulated digital currency will make form a closed loop technology crime, money laundering and terrorist, and disappear from unsolved bits, bytes, while the impact damage with each person in this world.
If every penny of extortion is tracked, is there enough motivation and courage to launch a WannaCry to attack the world?
Actually, the way it is today, I personally do not think that we need regulation for any crypto out there. But in a sense, we still need regulation because most of the governments wants this amd this will help it become legal in more countries which will push mass adoptuon. And yeah, there are also benefits like less scams, less crimes with crypto stealing etc. The only sad thing would be the fact that this happening would mean we are abandoning the ideologies of satoshi or the satoshi team.