I am sorry to read of your home and family being destroyed - what a terrible thing to go through. I don’t think the advice the Mormon family gave you is accurate though. The best way to a strong family is to put God first and to serve Him in all your ways. Like others here, I think one way this is manifest here and now is through patriarchal families which follow God’s design. Not every family should consist of more than one wife, but that is a valid option. Some husbands that take on multiple wives destroy their marriages, though I would say this is either because the husband or one of the wives is not truly seeking God OR the husband or one of the wives is not ready for the responsibility of a patriarchal plural marriage. Anyhow, the point is really this: seek God first. If you aren’t married, and you seek to be married, seek a man who puts God first in his life, not a man who puts you first. If he happens to already have a wife, then recognize this is a valid option that brings considerable blessings into the lives of many.