Guilt or innocence is not the point. When a child is born, BOTH parents have a right to know if or if not they are the biological parent.
It doesnt matter though, because although you dont agree, this is going to happen. There will be mandatory testing, and probably because WOMEN will demand it, after discovering that men are not going to marry them otherwise.
Maybe you are right, but I doubt it. Men will still marry women whether there is a DNA test or not, women don't always care to get married, and some partners are true to each other. There are a lot of dynamics involved in a relationship. And women aren't always the cheaters, as I well know:)