I’m talking about couples who love together long term and have kids here - not couples who live together for a short time as a precursor to marriage / CP, to find out if they are compatible.
I’m also talking about MOST couples - where then women earns less than the man and the women is the one who takes family leave, goes PT and does the most unpaid labour . Im not talking about multi millionaire women married to bin men ( who are very rare in RL but apparently very common on MN).
Lots of men do it because it allows them to have many of the advantages of marriage without any of the ( to them ) disadvantages.
They can keep control of all their assets and walk away any time they like, without having to give their partner any share of what she has often contributed to ( like his career success, his mortgage , pensions and savings ).
Men like having a woman to do their domestic labour and their share of child care without having to commit financially and legally to her. It allows them to build their carers, earn more money and have more leisure time.
Women have been persuaded that if they live with a man and have his children , legal marriage will follow.
Some women believe that an engagement is binding in some way aka “put a ring on it”.
Commercialism and an increasingly secular society has persuaded women that a very expensive wedding party is essential and more important than legal protection for her and her children. So they decide to “ wait and do it properly”.
Once they have children m many men are reluctant to marry as they don’t see any benefit in it for them ( and they are right ).
Just my opinion.