I consider myself a skeptic. I try not to believe anything that isn't supported by commensurate evidence. In my mind, a claim is a sacred thing, something to be carefully considered, not taken for granted or believed for some practical purpose.
Moderation is important, of course, but this is my default outlook. I want to know what's true about the world. Very little is more important to me.
Maintaining credibility is useful, too. I want others to take my views seriously. That might be harder if I had a reputation for believing things that aren't true.