I have to strongly disagree with this. First, you seem to be conflating “reproducing” with “getting sex”. Maximizing the number of your offspring has less to do with having sex and more to do with obtaining resources to raise your offspring to maturity. If you give away too many of your resources, you won’t have enough to raise your offspring.
Second, there are several different notions of niceness here. The one this post discusses has to do with phrasing communication, a form of social skills. This is different than giving away resources or not looking out for your own interests. Niceness in the sense of possessing social skills, maintaining allies and friends, and not being “miserable company” is exactly what helps get sex and lead large groups.
I have to strongly disagree with this. First, you seem to be conflating “reproducing” with “getting sex”. Maximizing the number of your offspring has less to do with having sex and more to do with obtaining resources to raise your offspring to maturity. If you give away too many of your resources, you won’t have enough to raise your offspring.
Second, there are several different notions of niceness here. The one this post discusses has to do with phrasing communication, a form of social skills. This is different than giving away resources or not looking out for your own interests. Niceness in the sense of possessing social skills, maintaining allies and friends, and not being “miserable company” is exactly what helps get sex and lead large groups.