When I screen, interview and hire people, I look for reasons to hire someone as opposed to trying to find reasons to disqualify people. This kind of negative approach (especially when dealing with people) is just not a good way to go about things in my opinion and experience.
I'm sure you do both. Why would you ignore negatives?
Like "this guys skillset is great so were going to ignore that he was fired from his last job for laziness and that all his department left because of his sociopathic behaviour". Seriously?