Not all but a vast majority. I would say 99 out of a 100. Hence we have sayings like "man up" or "be a man about it". It is based on biology. There are of course some outliers as there are in most everything. There is a reason women buy make up, wear bikinis, skinny jeans, nails, hair..it is to attract men. It starts at a younger age than I anticipated as I witness with my own kids. That is pure biology not social norms.Right. But not all men want to attract women, some are wired differently. Not all men identify with the way our society has defined male traits and acting as such is not natural for them