Define "fair." Here in Florida, my wife can have an affair, lie to me, our children and her parents about it, and if I file for divorce, her adultery can not only NOT be used as grounds for the divorce, but -- because we were considered to be in a "long-term marriage" (22 years) -- I would then have to give HER a rather large percentage of my earnings PERMANENTLY -- as long as I continued to work.
That would be in addition to child support, which is a basic formula, and which I would have NO problem paying, and then some.
Permanent alimony, to someone who cheated on you. What a country.
And I could FORGET about custody -- the man almost always loses that one, unless you can prove abuse or drug addiction or something.