During 99% of human history, we lived as small bands of hunters and gatherers. The environment of our species in those days selected for traits which promoted survival and reproduction under the actual conditions that existed then. The male agenda was eclecticism: impregnate as many females as you can. The female agenda was discriminative choice: bear the children of only the strongest, most economically effective males of your band or of some other band.
This worked well for species survival when birth-rates and death-rates were both high. But now it is no longer necessary for species survival that males should spend most of their short lives getting as many females pregnant as possible, nor that females spend most of their short lives being pregnant and nursing babies.
An inherent part of this double agenda was for males to be assertive, even aggressive, toward generally reluctant females; and for females to be resistant to the advances of most males. But women are largely freed from the rigid reproductive imperative, and brute male strength and aggressiveness are no longer the qualities most needed for the economic effectiveness of males. Yet both sexes, I believe, are still strongly urged by their very neurophysiology to enact this ancient dance of pursue-and-resist.
We are now at a time in the evolution of our species when we can, and indeed must, find a way for men and women to relate more equally to each other: a way that does not involve the domination of passive women by aggressive men, but rather involves a more assertive role for both genders, both in sexuality and in life in general. While we are still in the process of developing this egalitarian new way of relating, it would behoove each of us to respond with some tolerance and understanding--and yes, even humor!--to the biological impulsions still experienced by the other sex.
Women, accept men for the sexual initiators that we have been evolved to be, if we make our overtures politely and considerately, even while you gently refuse our advances. When you "choose not to be chosen", do it in a way that does not anger and alienate the well-meaning man whom you choose not to be chosen by! And men, you can choose to "press the chase" either in ways that frighten and alienate women, or in ways that help them to feel safe with you because they are safe with you! Choose the latter!
Let's have a little empathy around here, people, while we work all this out!