There's something to be said for a politician having some level of personal conviction: if only because eventually there will be a crisis where they have to decide, in private, on things the public discourse can't know yet.

And I do generally like the idea that a politician is doing things because they believe they're reasonably good things to do: a politician who's being asked to go against a deeply held belief should probably either fight it or step down. Or, you know, thoughtfully re-examine their beliefs. Politicians are people too and people who do things they believe are wrong in order to keep power usually goes nowhere good.

But a person who is able to thoughtfully re-examine their beliefs in response to public pressure, or who is willing to bend and compromise on things that aren't core convictions - yes! That is a good thing in a politician!

And for someone who's been politically active as long as Hillary has to have never changed their mind would be a really, really, really bad sign.