Your complaint is that guys want someone who is "pretty." If you are automatically equating "pretty" to mean a magazine supermodel then the issue here is with your assumption not with society or nature. "I want my girlfriend to be pretty" is a vague and understandable statement.
Bohtty: I agree with you on most part, but still everyone has different things that he/she thinks is attractive in first place(there is no "perfect" human)
And for the fake muscles: You get them by taking certain substances which make you look pumped, even if you are not really strong.
Ummm smell does play some roll, but I can promise you it doesn't play that big of a roll. I promise. That may be true for monkeys or other more primitive animals, but not for majority of humans. Also there isn't such a thing as being factually "ugly"