We tend to associate bad doctrine with bad motives. It seems to be that we tend to lump together those who we consider to be teaching error into the group of "wolves" and "false teachers" and "heretics" without considering that they may just be in error.
There’s no reason why I shouldn’t be serving a life sentence in prison right now. There’s also no reason why I shouldn’t be suffering from some incurable disease. There’s no reason why I shouldn’t be poor, destitute, and lonely.