Why is it that men who have to learn how to charm women are seen as inferior? Why is it that men HAVE to be natural at attracting a woman?

Fat women have the ability to lose weight and become more attractive. Why can't men do things that make them more attractive as well?

Wouldn't seem completely unfair for a guy who's had a shitty hand in life to just accept that he's never going to find intimacy? I mean, if a woman was born seriously deformed in any way and somehow manages to become hot later in life, no man would really care. So then, why can't a man learn to charm a woman?