Unlike a used car, people do not come with a money-back guarantee. It's therefore wise to establish whether or not a couple is compatible before getting engaged and filing for a fiance visa.
I feel sorry for that woman who just gave up everything at her home country to travel thousands of miles to a foreign continent to marry the love of her life, only to find out she's not as good as your petitioning husband bargained for.
Nadja&Holland reacted to Brother Hesekiel in How to make Fiancee deport. dont want to marry her