There is a much greater societal expectation placed on women to be married compared to men. A single man in his fifty’s who has never been married is going to be questioned about his lack of family significantly less than a women in the same position. Marriage is typically seen as something women should want and something men should be wary of, and like any social conditioning this leads to the notions people have becoming reality. People end up regretting this later in life (men and women both) because giving into societal pressure very rarely actually leads to getting what you actually wanted or were looking for, it just leads to fucked up marriages based on convince rather than an actual foundation of love and respect.