Sometimes, couples become so pressured they have trouble budgeting time to spend together. Being disciplined enough to do so can mean a marriage that succeeds. This is one reason why abuse occurs. Unless spouses are equal and share responsibilities as mature adults, they will experience a serious imbalance in their relationship. It's unfortunate when one of the parents dumps the total burden on the other.
Irresponsible mates pursue self-pleasure.
It's as simple as that. If families work together, they stay together. When both spouses participate in child rearing, it makes for healthier, closer families. As a husband in a marriage of 53 years and the father of three, I would like to add that the children are the husband's children, too. He should be grateful his wife gives time and love to his children.