Helping kids cope with a divorce, should be the #1 priority of parents getting the divorce. Children need to be assured they are not the reason this is happening. Both parties need to communication with their kids in a positive way, allowing them to have a sense that everything and everyone will be alright. Children need the love and nurturing from both sides of the family, helping them become healthy individuals.
A Divorce can become very intense when one parent wants the divorce and the other doesn't, which is usually the way. Resentment sets in, then the nasty begins, once the harsh words are said you can't take 'em back. Always use the 'motto' "If you don't have anything nice to say, keep it to yourself". Never speak negative or harsh of the other parent, your children will only resent you for it. They will learn the true nature of both parents as they have life experiences of their own.
Some married couples will remain together because of the kids, but I never did agree on this one. I actually believe this can do more harm than good, especially if both parties cannot provide a positive upbringing to the children.