Most children do not want their parents to get divorced. They may feel angry, depressed, and/or scared. It may take them some time to regain their sense of security. Most, however, are resilient. They learn to cope with the changes in their lives.
Lasting damage results not primarily from the divorce itself but from what happens before, during, and after the divorce. High conflict between the parents, especially if it occurs where the child can see or hear it, does a lot of damage. That is why courts routinely tell divorcing couples not to disparage the other parent in front of the child. Complain to your friends in privacy as much as you need to, but avoid criticizing the other parent in front of your child.