While I sympathize with the ability for fiction to have a lack of realism, anyone who knows much about women understands that obscenely large breasts come with a whole host of health problems.
-like back pain, bra straps digging into the shoulders, and rashes developing under the breasts.
-Another problem that many women have, often without even realizing it, is
shortness of breath. The weight of excess breast tissue on the chest can actually require women to work harder to breath. This is because the breasts are constricting the natural movement of the diaphragm by weighing down the muscles and ribs. Some women may experience this as they go about their daily activities, noticing it’s difficult to take deep breaths (or even normal breaths in some cases). Others may realize their breathing capacity is limited as they try to sleep on their back, due to the entirety of their breast weight causing increased pressure on their chest.
One of my sisters had very large breasts, and she couldn't even sleep on her back because the weight of her breasts would suffocate her at night. She had a breast reduction performed and is much happier.
As a result, I prefer women with smaller breasts, because I sympathize with women and the issues that large breasts cause.
4 out of the 6 women in this title-bar image would have these problems. I think you can guess which 4 women would be suffering here.
Also, lets play the 'would you have kids with this woman' game. And realize that if any of your kids inherited those huge breast sizes, then your kids WOULD have health issues due to the out of proportion anatomy. Would you willingly give your kids health problems? I wouldn't.