At this very moment, when the overall market of the crypto currencies and bitcoin specially is very much low and that most of the investors have already done panic selling, this global regulation of the bitcoin is very much necessary thing as this will surely help the bitcoin market to be little better and that this will also help in gaining the confidence of the ones who have invested their money into it.
Regulation is only going to usher in bigger players who will feel a little bit secured but that would still not change the advantage some of these bigger players will have in the market. Also, there will be some restrictions on exchanges anyway, so we can just expect that things may get better with regulation and moving forward as well. The confidence for investors is one thing that I am sure will get boosted anyway and we may see the era of being ushered into the mainstream.
All human activities must be regulated, but in this case we forget that the rules are already there: those defined by the software.
Putting external rules will only create confusion.
External rules are just there to curtail some certain things and it is not like the main protocol of anything will be changed. I believe regulation will always be on the country level and for some of the companies operational in those countries, and that would bring some level of sanity to the whole cryptocurrency environment considering how things will be done and some level of illegal activities will be curbed such as scam most especially.