It is just your brain and chemicals. You start crave for some one. Also everything in society expects you to do it. It is kind of glorified propaganda they use it to sell you stuff. Kind of like feminists describe patriarchy. I dnt know the name for it but it is a natural order. You need to impregnate some one to pass on the information as a human. Certainly tons of men in history perished because of chicks, to get a chick, to be able to get a chick of this evolutionary conspiracy abstracted by society. Men often genuinely love a person and then fall into depression or get financially ruined when they could have achieved other things. We humans can think I think we should be better than other animals on this planet so we need to find another way.
[video=youtube;WfUkwBnEWpU]https://www.youtube.com/watch?v=WfUkwBnEWpU[/video]