Jacob 3:7

"Behold, their husbands love their wives, and their wives love their husbands; and their husbands and their wives love their children; and their unbelief and their hatred towards you is because of the iniquity of their fathers; wherefore, how much better are you than they, in the sight of your great Creator?"

The Nephites at this time were committing infidelity. The Lamanites were not. Even though the Lamanites were not living gospel standards, they were faithful to their families. We do not know people's backgrounds or circumstances, so it is better not to judge them.