The same reason some of you actually exercise way too much and look like a rock of muscles.. Do you think every women likes?
Now back to topic, what are you actually considering curvy? If you consider someone 30 BMI + curvy and you like that, okey that's your opinion. I for myself like the women to have flesh on her, but looking like a HIPPO? No thanks. But anorexia girls is just gross. You'd like to have something that is in between these two, way too curvy bleh, you're just saying that to be nice and do disagree with the females. Let them females exercise, it's their body and for same reason, why do you still play video games while most girls hate computer nerds?
Not trying to offend anyone, my apologize if so, but really... I'd like a fit woman, more than a curvy.. And again, not everyone agrees with my opinion, but again.. not everyone is fit, so that's perfectly fine.
Skinny
http://us.123rf.com/400wm/400/400/yu...background.jpg
Fit
http://thumbs.dreamstime.com/thumbla...3421RbJOFY.jpg
Curvy
http://beyoubebold.com/wp-content/up.../07/curvy2.jpg
Faces not related, just the body. And again, everyone's unique.
My opinion, stays the same, let them do what they wish, they're not setting up reasons for you, don't got exercise way too much so you get a muscles mountain, do play video games, don't do this don't do that don't bla bla..