But that's different. There are people who are nasty more like 50% of the time, or maybe even 95%. It's good to recognize that yes, that's me some of the time, but "quantity has a quality all its own", as Stalin (allegedly?) said. Too much of that attitude and/or behavior puts you in a different category.
And even for people in that category, it's also important to realize that they have their 5% - or even 50% - where they aren't like that. That doesn't make you want to hang around them - even 50% jerk is too much for me to want to spend time with them - but still recognize that the other part is there, and appreciate it when you see it.