I think that regulation is something that is inevitable and more and more countries will decide to regulate Bitcoin in some way. But I don't think that regulation is equal to centralization. Bitcoin can be regulated and decentralized at the same time.
Regulation means seting some rules how Bitcoin should be treated, what is legal and what isn't, how it should be fitted into financial framework.
I think that regulation could strengthen Bitcoin and help it to be more accepted, we don't have to be afraid of that.
Every time a certain system or technology becomes popular, It seems that the government authorities comes in to the scene, and become more intense in imposing regulations and control. But if these rules and regulations are made to benefits the users and patronizers of bitcoin, and will really make a positive impact in the economy. Then why not? We all hope that this will bring a larger market cap and wider coverage for the entire crypto world.