The reason is because of feminism and the western legal system is designed against men. Men nearly always lose and a loss isn't something you get over in a few weeks, that follows you for years, maybe decades. Don't get married. Don't have kids. No cohabitation. Don't date single mothers. If you want to get laid, pay for an escort, it's far cheaper. Don't get the government involved in your life and relationships, you will get screwed over because it's about whats in the best interest of the child even if that child isn't yours and it's hardly ever whats in the best interest for men. If she does get pregnant, get a paternity test before signing any papers. Understand that society believes that men are disposable and should work and pay, protect yourself and build the life you wan't. Pussy isn't worth it. Post nut clarity is important, use it. If you don't do these things, you will likely end up paying for children that are not yours or if they're yours you probably won't see them because she can do better and find a 10%. If you divorce you will end up paying alimony or some sort of spouse support while she is banging others guys. If you stay together, the sex will likely slow to a crawl, get boring and she will use it to manipulate you. If you leave you will pay and lose your stuff, if you stay you will be depressed. I've never met a happily married man, truly happy. What I can say, being single for so long, I don't have the concerns or worries that comes with relationships and marriage and my stress levels are minimal, I don't have money concerns and overall very happy.