Simply put, I think it has to do with design and dependency. Most of us grow up with people in our lives (famiily and friends) who not only provided for our physical needs but also helped to shape us, whether it be through experiences including examples of character,.attitudes and activities (how people invest their time). People have a need to be affirmed on various levels also and we were all designed with a need for love. I can personally testify that I felt I needed another person to "complete me," before I grew in a personal relationship with Jesus Christ. If God forbid, something were to happen to my husband, the LAST thing I'd do is try to find another man in the future. Now I don't seek man to learn whether or not I'm valued or special. Sometimes the affirmation comes through other people but I know since none of us are perfect, people will hurt, fail and disappoint me. Relationships can be messy and complicated and I don't enjoy drama. Today I could be single and satisfied. Life can be much simpler when a person is single. Simplicity in my opinion, is a good thing, regardless of whether or not we are talking about relationships.