EDIT: Oh ya, back on topic xD.
I've thought of this question some, and I still don't have an answer. The problem I see, is that in the best systems, there's room for corruption. I don't know much about government or different forms of it, but here's some problems I see:
Current government: Personally, I don't see much problem with it. Of course, it's nowhere near as good as it could be, but that's, as far as I know, in the case of things that could easily be changed(but wouldn't happen because of the same problem with other governments), or, if that problem with thios and other governements weren't there, then you could say 'screw this' and switch.
Anarchy: Look below
Monarchy: Greedy jackasses that feel that they are somehow superior to the lower-classes
Communism: If I remember what this is correctly, then lazy jack-asses.
All the same problem; human corruption(jackasses).
QUOTE
The government has WAY too much power over our lives. Noone should have any more power over my life than ME! If I want to do something, the government shouldn't be allowed to stop me. When that happens, it leads to complete censorship, and absolutely NO freedom. If you actually wanted to have an Anarchist government, you'd have to FULLY commit to it. That means, you'd have to realise when someone's taking charge, and put a stop to it. The only way for it to work is everyone works to make it.
One problem I've seen with that so often; by giving power to the people, you give them the power to have power over another's life.
Your actions effect other people. The more freedom you have, the more extreme such a thing is. So, really, you'd be handing your power to choose to anyone who's in some way more powerful then you. And then you just have to hope that those people are not

s. Which, of course, is unlikely.