Any man who has been in an LTR with a mid-20s/early-30s woman has most likely experienced her "baby fever." All of the sudden, the idea of babies creep into every aspect of your relationship with her: she converses about babies, she wanders to the baby section of Target, she watches videos of cute babies, etc. It comes in waves, more frequently as she gets older. And her boyfriend - the main man in her life - have had to weather the storms.

There are two evolutionary reasons for "baby fever." The first, of course is that women are biologically designed to bear children, but they only have a limited amount of time to do so. So they have a "biological clock" that is ticking away throughout her young adulthood. This forces her to find a man to provide for her and her offspring. Once she finds a suitable partner. the "baby fever" is a subconscious method of worming into her partner's thoughts.

The second reason is social pressure. When one woman has a baby, all of her friends suddenly want to have one too. It's like clockwork, so predictable. Why is that? Because to a woman, having a baby signals that she is worthy of a man's time and resources. So when one of her friends has a baby, she subconsciously feels like she's less worthy; therefore, she desires to become impregnated as soon as possible to prove to her friends that she is also valuable.

"Baby fever" is not indicative of a woman's capability to mother children. Many woman get "baby fever." But some women will be shitty moms, some will be saints, and most will be average. It is up to men to pick which women are worthy enough to raise their offspring. And it is also each man's responsibility to create children on his own terms and timeline; he should not cave in to pressure from society or his girlfriend.