Marriage never destroys lives. Selfishness and sin do that.
Lots of people's lives (including children's) are destroyed by the combination of one lousy partner in a marriage, and the other partner insisting on staying anyway, either out of financial necessity (read: I always assumed I'd be part of a great pair forever, so I made no plans to be financially secure any other way), or out of misguided religious beliefs ("til death do us part" isn't supposed to mean "until I die at my husband's brutal hands, with my children watching"). I know plenty of people who are lifeling psychological basket cases, as a result or growing up in a home with an intact but awful marriage. They're easily in as bad shape as those who grew up in the middle of a vicious tug-of-war between divorced parents.