Why do humans have large breasts?

Answer 1

A fetus up until a certain point in it's gestation has no gender, and hormone levels determine which gender it will become. Men have nipples and inactive undeveloped breasts, as women's clitoris is an equivalent to the male penis.

Some people are born literally with both sets of internal and external reproductive organs and every variation thereof.

Answer 2

In other female primates, the vaginal area swells to show arousal, and they often have intercourse female back to male front, so the swelled pelvis was highly visible to the male primate. Since there are many humans that have sex front to front, scientists think that the human female breasts evolved to be swollen in a way to make up for that and help to arouse the male.

Answer
Among primates, human males also possess the largest penis to body size ratio.
I believe that God, leaving His best work til last in Creation, has made life such that as His best 'product', he has maximized the difference and attraction between the two.

Answer 3

Breasts are formed by the presence of Estrogen in the body. While men usually have more testosterone, and women have more estrogen, it is a scientific fact that both genders carry both hormones. If a males level of testosterone were to fall, or level of estrogen were to rise, the possibility of developing breasts increases. As you age, your gender-based hormone levels, ie testosterone for males, falls. This is why some older women have facial hair and some older men have breasts.

Answer 4

Males have breasts because all life - and some might say all of Creation- is essentially female. The growth of male human beings in utero clearly shows that maleness is a development from a decidedly female norm, not from a neutral one that could go either way. The normal presence of breasts with nipples on males may be considered proof enough that the Biblical story of Adam's rib, which has been used to justify the absurd contention that males are better suited to organize and operate human society than females are, is not the truth.

Answer 5

Humans have evolved to have larger breasts compared to other primates due to sexual selection and the cultural significance of breasts in attracting mates and nurturing offspring. The size of breasts can also be influenced by hormonal and genetic factors.

Answer 6

Breats arouse men, because they are prohibited. If women were to walk around naked all the time, it wouldn't be that big of a deal. It is the excitement of something "against the rules."