>>113557
Fresh sperm tends to be the healthiest and most likely to lead to proper impregnation and a healthy birth, so no, it's not wasteful, sperm production is pretty low intensity and easy on the body.
Humans don't have a mating season because we've adapted and can easily survive all 4 seasons, that about because of our long pregnancies and vulnerability for the first few years of our lives a breeding season is pointless. Most animals come out of the womb/egg pretty much just like smaller adults, and the process was way less time consuming so by the time winter hits the animal is fully capable of dealing with it.

tldr: we breed whenever because we can.


Also, monogamy is extremely important to a childs development but tell that to modern women and you'll get called a sexist because single mothers generally create complete monsters like serial killers, niggers, Doom guys, Dellestelles e-girls, and men who pee sitting down.