There are a number of different reasons, but here are some answers from unmarried men on why they don't want to commit:

• I think that women are controlling in a way that I don't appreciate.
• I don't want children, and I think that women will want to lure me into having children.
• My children should not need to have a stepmother.
• I want to date several women and don't want to promise anyone a lifelong commitment and fidelity.
• I want to live my life watching sports, football on TV, going to games and drinking beer, and don't want any comments on how I live my life.
• I'm afraid I won't live up to her expectations.
• I don't want to be criticized
• I already have a boyfriend
• I have a nice relationship with my mother and my girlfriend didn't approve of it.
• I love my family, but my girlfriend wanted it to be just her and me.
• I enjoy the company of my friends and see no reason to start spending time with her instead.
• I'm afraid she'll have issues with my drinking habits.
• I don't want to have any financial demands put on me, I want to do other things in life than work.
• I have had bad experiences and role models from my parents' marriage.
• My girlfriend cheated with my best friend.
• I have seen too many relationships breaking up among my friends to be able to believe in marriage.
• I think women place unreasonable demands on men.
• Why commit when it is so easy for me to meet women?
• She went mad after having spotted my pornographic magazines, and I don't want to throw them out.
• I have had poor previous experiences.
• She wanted me to be part of her lifelong project consisting of a family and children, but she never wanted to go out sailing with me.
• Chelsea, the football team, is my greatest love.
• There was too much fighting; I want peace and quiet.
• She never wanted to have sex and she was good looking and turned me on, so it simply got to be too frustrating.
• I don't want to commit for life, I want to be free to do whatever pleases me.

A simple test for finding out if a man has serious intentions is to tell him "I do not believe in sex before marriage".