I know arranged marriages are a thing in some cultures. Some might work out great, or both parties have no clue things could be different.
There is so much in having a meaningful relationship that far surpasses looks I agree, but they do play a part. There are far greater reasons why people shouldn't be forced to marry that would make relationships difficult. Money habits, parenting styles, religion, shared interests and different interests to keep things interesting. I mean the list is endless when it comes to picking a partner.
Men might think it would be great to have a woman of their choice forced to marry them, but I imagine it won't be too much fun when their spouse despises them and refuses to interact with them or even more so searching for someone they truly love outside the marriage.