Guys can wear makeup too. Plus, I don't think too much makeup is necessary but for some people it's like art and I respect that. Maybe some people wear makeup because of insecurities, but most just like it and therefor do it.
Woman wear makeup and perfume because they like to. Sometimes they do it because they think it will get them more attention. Either way, we're going to do what we want and your dumbass opinion isn't going to make a goddamn difference.