From the point of view of a believer, life has a meaning. We don’t believe in the absurdity of life like existentialists. We believe in an Absolute Truth. God is not an idea that we create in our mind. Existentialism and Relativism believe that reality is subjective and that each person creates their own world. Each person is a creator of their own truth.
Because there is a true meaning to life, as believers, we know that our acts matter to us and to others. Life is not an absurd haphazard thing. Marriage and family have a true purpose to individuals and to society.
Non-believers, on the other hand, don’t have this moral foundation. They only take into consideration their own happiness and other pragmatic considerations. And since their views are relative and subjective, they also have a changing dynamic nature. It’s a pragmatic equation for them, and they follow their feelings and mind to make their decisions. But feelings change all the time. Also, as we grow older, we go through many physical and hormonal changes. I can’t list all the reasons people’s feelings and priorities change with time, but my point is that without a constant moral foundation such as the one that religion provides, most marriages are bound to fail sooner or later.
Of course, there are exceptions to that rule. And even religious people need to learn good relationship habits to have a happy marriage.
