Hitler used to go on and on about "family values" too. It's a standard practice of politicians to do that, and most of them probably believe in it while they're saying it....although their private behaviour may not live up to their rhetoric.

Most people DO think family values are a good thing. They also think people shouldn't run red lights and should come to a full stop at stop signs and should tell the truth on their tax return....but they tend to make little exceptions in their own case, because they figure that their particular circumstances provide for an exception to the rule! ;-)

Politicians are like that too. The main difference with them is, they're in a position to take greater advantage of temptation than is the average person. (Same goes for the very rich, famous, and powerful.) And that's why they say that "absolute power corrupts absolutely".