I think it's funny to say it's a contra that Bitcoins can be used for fraud or illegal things. Could anyone here tell me a currency which doesn't allow me to do this?
Quite right. However, given that Bitcoin is 'sudo-anonymous' it means that its more prone to fraud and illegal activities than many other currencies. At least in theory and hence the reason for this being a popular topic for discussion, especially in terms of prevention and limitation.
I-am-not-anonymous that is an 'extreme' example...