Fortunately when people can look at issues rationally not emotionally we can debate under what conditions (age, development, maturity etc.) a person is able to give their consent.
Once everybody in the world is considering issues rationally the first guy that starts debating emotionally is going to have a hell of a big influence. Half the population has an IQ below 100.
But if everyone in the world considered issues rationally, then everyone would be smarter, no?