And pretending you want to commit, when your heart yearns for freedom, is a recipe for disaster.
Because, several top cognitive-science experts say, you can wind up more isolated with a partner than you would by yourself. Cacioppo, director of the Center for Cognitive and Social Neuroscience at the University of Chicago, explains that "being alone and being lonely are not the same thing, but they're both stigmatized in our society." It's why people who prefer solitude nevertheless look for relationships out of guilt — but feel even guiltier once they're in one.
'I was totally cocky and I thought I could do this - it was never in my head that I would do anything other than 50/50 and then I realised my talents were not near the standards of my ego,' Mr Heffernan told Daily Mail Australia.
'On the week I didn't have him I was drinking and partying far too much, blocking out that I didn't have the kid - that's how I managed it, which was really stupid because I ended up with depression.' It was when Ryan and his former partner sold their property that he decided to leave his high-intensity job, and threw himself into freelance writing and short-term contract work - which allowed him to live a flexible life, once enough money was saved.
You're going to advance in years, your body is going to fall apart, and going through it alone is no fun. Wexler, director of the Center for Aging, Sexuality and Meaning and blogger for Psychology Today, has been married twice.