Sexual Relationships 
Sexual Health 
The bikini model in picture A wouldn't look hot at all without the tiny waist, to me. With women's wide hips having a tinier waist is even more essential to having a stronger look.
The myth that men want a weak, naturally submissive, unathletic girlfriend is INSANE. Fit, strong (but not muscular), capable women are what makes the perfect model.
Models are generally dainty. This is because upper class people are less bulky and more 'long'. Their legs, arms, heads, fingers, toes, they are all longer and skinnier than average.
This is not a look that is unique to females. Believe it or not most females like the dainty look on males too. Why? Because it actually is stronger. You won't see them lifting the heaviest weights of all time but it does give them more agility and speed. Which is far more important in athletics, war, and life in general.
It's my opinion that female attractive ness is soley based on how fit of a son she could bear. This is why it is essential that she have a tiny or at least small waist that highlights her strong upper body, that her wide hips would hide otherwise.
The girl in picture B was a girl I was considering to be my girlfriend at one point. I just couldnt get over how beautiful her legs were. She is 5ft11in tall. I usually dont like tall women because they dont look very good on average. But she clearly has a nice look, doesn't she?
It's the legs. They're strong af looking. She told me she likes hiking etc., hobbies indicate to me she would birth an athlete.
Shoutout to Agope for inspiring this question
What Girls & Guys Said
9 43I am not attracted to strength
Horny on the small waist, I think, no, but getting horny by seeing other parts,
For me it all depends on the woman. I've been with skinny women to bigger women it all depends on what she looks like and her personality
total package is where its at, and how its displayed...
Thats not the question
Maybe the small waist makes the breasts more prominent which is also an attractive feature
Thats not the answer i was looking for.
Well I like that so everyone is different but it looks healthy to have a small waist
Because we're evil. That's the only explanation. We are pure evil for finding slim women attractive.
Probably the same reason that women get all horny for a b I g fat bank account. Having one doesn't make you a better man.
I don't get horny over a small waist. She has big breasts. That will make any man horny.