I could care less what Bill Clinton, John F. Kennedy, or Eleanor Roosevelt do on the side. That's between them and the person they swore to be faithful to. It's frankly none of my business.
But when you are the POTUS and you lie in sworn testimony, that's an altogether different thing. And that's the part of it that most people who had a problem, had a problem with.
My biggest problem with Hillary, was the vile way she treated any woman who dared to accuse her husband of anything non-consensual. And there were a few, more than did Cosby in fact. And her actions toward them were reminiscent of the 1940's... or modern Saudi Arabia. She makes Andrew Dice Clay's stage act look like a Feminist rally by comparison.