Specifically for the net, it's a concession that we need gov't to wield the ultimate authority over detailed aspects of the Internet and step into many disputes between private parties if the specter of non-neutrality is raised (and of course it will be). You might think it's in your immediate favor, but voting for net neutrality isn't really voting for equal packet treatment: it's voting for government control over packet treatment, which will be turned against you in ways you haven't foreseen.
Net neutrality is like saying I can't open a store w/out handicap access, even though handicapped folks have the option of a) passing by my store to another; or b) finding a way to shop at mine because it's closer and has lower prices. "Shop neutrality" would dictate that if I won't treat everyone equally - although it's clear in my terms - I just shouldn't exist. There are those who agree with this analogy, too, of course.
You suppose the government should be the ultimate arbiter of what options should be on offer, rather than the entrepreneur and the market of free people? A dangerous way to look at it, I think.
No, the telecoms aren't by any stretch unregulated as it is. But if that's your complaint, tackle it from that direction, not by badly regulating bad regulations.