Married couples going through divorce/infidelity/family/kids/health issues(which is not rare) is a tremendous risk as well, right? I don't understand why lonel

Married couples going through divorce/infidelity/family/kids/health issues(which is not rare) is a tremendous risk as well, right? I don't understand why lonely people are automatically classified as a tremendous risk. I've experienced multiple times that exactly the opposite is often the case.