As I'm a generally anxious person, I don't unquestioningly trust my gut, but I feel uncomfortable beyond my "regular" anxiety, if that makes sense...
Whats your experience with not liking somebody that's very popular or "perfect on paper"? Might not be a dangerous person, but you seem to be in the minority finding them disingenuous or not trustworthy.
If you're also anxious or nervous, how do you handle your gut feelings and know when to trust them or not?