We know the saying: "women understand women and they hate each other."

This sentence can be rephrased like: "parasites understand parasites and they hate each other."

Parasites(women) fight for a good host(men) to leech off from. However, if the host chooses another parasite, the rejected parasite will hate the host and it doesn't want to give the host away to an underserved parasite competitor. If I don't get this host you will get him neither, would be the mentality of a parasite. so they try to destroy the host to prevent other parasites from having that target.

When a parasite leaves a host who has committed to it, the host is still forced to give his life span away to the parasite while the parasite continues its journey for another prey. Men tend to think that parasites aren't parasites but when the parasite hits them and start leeching off them it's too late. (sorry for fellows who have gone through this) A parasite doesn't like another parasite so they leave the mark that this hosts life span is taken.

If the host is worthy to share their spot with other parasites(chads/wealthy men), they will share the host. However, parasites want to destroy other parasites they share their host with, so they can have the whole host to themselves. Parasites don't like to share their hosts. They want their cake and eat it too.

Sometimes a parasite has more than one host. May some unknown force help men who are facing a parasite.

We also know that women sometimes kill their own children when a child becomes a burden on a woman. The child is now leeching off the parasite and the parasite obviously doesn't like a child leeching off them, so they destroy the leech.

side note: if you don't understand what I said, replace parasite with women and host with men.