Damon doesn’t like him. Alaric can’t stand him. Even Elena fled into the woods to escape her father/Uncle John. But just because you’re losing Mystic Falls’ popularity contest is no reason the townsfolk should be calling for your head. Except that John has taken Alaric’s ring, made Jenna suspicious, and um, you know, tried to kill Damon.
So why is Uncle John still breathing? No doubt he has some serious knowledge — he provided that vampire-slaying ash, after all. Is that enough to keep him around for the showcase showdown with Klaus?