Pregnancy is no more the "born nature of womanhood" than unfettered intercourse and ejaculation with as many victims as possible is the born nature of manhood. Both events benefit tremendously from the application of huge doses of intervention and restraint. May have been a time when your way was useful, but it's the 21st century now and pregnancy in the western world is likely to be an occasional, rare, or non-existent happening in a woman's life. And most women like it that way. 

A ridiculous analogy as well.