Same with "shotgun" engagements. A man never asked you to marry him, but as soon as you announce you are pregnant, he wants to marry you? No thank you.
This! These situations always come off as a way for a man to assuage his guilt and not from love or deep commitment.
I know whereof I speak. This was the case for my parents. No love there, I was resented and they heaped physical and verbal abuse upon me to punish me for my existence, and for them having to stay together. I no longer speak to them and I am finally happy and I am valued by my husband and daughter.
A couple who marries because of appearances or because "it is the right thing", isn't doing the right thing for anyone.