Bicycles for guys are weird

What are some of the characteristics one looks for in a bike? Functionality and ease of use would be two of my priorities. So I have to admit that I cannot for the life of me understand why the typical bicycle model for men has this awkward bar situated horizontally high up on the frame. It really makes mounting and descending much more difficult. And it can cause some serious harm and injuries in sensitive places. Why are they constructed that way? I find it hard to see the logic. Unless they were invented as some early form for birth control method?

A typical bike for women

A typical bike for ladies

A typical bike for guys

A typical bike for guys