They do favor the less wealthy spouse. That's why Britney Spears paid Federline several million dollars in alimony.

The reason for the apparent gender bias is that the woman is usually the less wealthy spouse, generally because the woman is usually the younger spouse and frequently leaves the workforce or takes lower-paying employment to care for any children that may issue.

Depends on what you want. If you only want money, this is true.

If you want custody of your children, most of the time women win it. I believe this is true even if the man was looking after the children and the woman was working, although I'm not sure about the US.

Family court is terribly biased against men. http://www.realworlddivorce.com/