>>4276706>>4276735You can give some arguments, but it all comes down to what people find decent and what not. In our culture it is generally considered wrong to have sex with 11 year olds, that's the only real reason as to why it's illegal to do so (plus the biological factor, but if it was the only one, then we would be allowed to fuck 12 year olds if not younger). Mental maturity is just an excuse, some people never do mature that way, some do at the age of 14.
Unless you change whole culture of your country (or probably the whole world at this point in time), you won't change it by more than a year or two at most.