Also I would like to add that not even all cultures like big asses. Some even find the practice of injecting cement into buttocks (to enlarge them) to be repulsive. Different cultures have different preferences. Heck, different cultures can even be sensitive to different colors in their eyes[1].
Once people open their eyes and broaden their minds they'll see that perceptions are extremely malleable.
Height didn't work out for the dinosaurs, and being small works great for the cockroach. There is no objective short == bad in reality.
[1] https://gondwana-collection.com/blog/how-do-namibian-himbas-...
Isn't this something we're watching evolve in real time? like right now? Cultures that didn't appreciate them now seem to be viewing them in a positive light.
Obviously taller men are naturally superior to shorter men and so it's just natural that they make more money. /sarcasm
And saying men have always shown a preference for larger breasts is begging the question. There are plenty of studies out there showing that breast size preference is complicated -- bigger is not always better.
Some cultures prefer medium sized breasts (actually, most studies I found this is the preference).[1] Poorer men might prefer larger breasts and richer men might prefer smaller breasts [2][3] Or maybe sexist men prefer larger breasts [4]
I don't think we know why women have the breasts they have or if breast size actually is a meaningful signifier of reproductive fitness. Seems like evidence points that women get breast implants because of their own opinions of their body image and not because it's an actual reproductive advantage.[5]
[1] https://www.sciencedirect.com/science/article/abs/pii/S10905...
[2] https://journals.plos.org/plosone/article?id=10.1371/journal...
[3] https://pubmed.ncbi.nlm.nih.gov/20862533/
[4] https://pubmed.ncbi.nlm.nih.gov/23412650/
[5] https://www.psychologytoday.com/us/blog/how-we-do-it/202001/...