Female anatomy is much nicer. Even you straight women must agree on this. I heard somewhere something along the lines of "The male body is a rugged working machine, the female body is a streamlined peice of art." Basically...
No, us straight women don't need to agree. I like a man's body. I especially like a slender body with definition. I like the veins that pop out on a man's arms after lifting heavy objects for hours. I like the movement of these muscles in actions. I don't have the words to describe what I like about the male physique.
But, I don't like the roundness of the female body, as far as attraction goes. I see my own body, I am attracted to the more streamlined male body. If I wanted to see round smooth lines, I'd look in the mirror. I like the jagged lines of a man's body.
I can't explain, but to me, men are beautiful to see, touch and feel. They're fun to play with.