There is economical reason for it - not saying it is the best approach how it is handled nowadays, but you need to have some sort of control to counter-react in some circumstances. There will be always fraud but without that control many things would have much more impact, than they have now. Economics is nothing new, we have many years of experience what can happen in terms of currency; just because there is BTC does not mean, that we have to run into the same problems like before - people are starving because of such problems, people will die or lose everything. Are you from the US? Could you possible imagine what would happen with the US NOW, when there would be no regulation? What would've been happend some years back .. those subjects are not simple but they exist. Noone thought of them when inventing BTC ..