Imperfection

... is what makes us human, don't you think? Our flaws, and how we deal with them. Struggle and pain and weakness.
Some things and some people just seem too perfect. Perfect record, perfect character, nary half a flaw to be found even after you've scrutinised them and their histories all day. Unflappable, confident even in the most stressful situations, always ready with the perfectly correct response. Never wrong. Those people are scary. Intimidating. A little, perhaps, inhuman.