My experience has been seeing how much a mother can love her children is nothing that can ever be put into words, or understood by people who are not mothers. The worries about their health and safety are multiplied by the number of children we have.
Other than those two, most outstanding, experiences; I've found that when we treasure our children, treat them with respect, tell them right from wrong, see them as the blessings they are, and are kind and supportive; all generally goes pretty well with regard to the kind of people they become.
I think too many parents are always looking for what's wrong with their children (or imagining what they might do wrong when they grow up), rather than seeing all that is right and even perfect about them. I don't think when we truly value, respect, and admire our children that things can too far wrong.