>Hate and anger are only problematic if you act on them in destructive ways or are in a culture that stigmatizes them.
That is certainly a problem, but it isn't what I was referring to. I meant that hate and anger can lead to burnout (primarily fatigue and depression), if they are experienced excessively.
Acting out the anger may in fact lead to reduced chance of burnout, as it prevents the emotions from building up inside.
For most of us, it's latter that causes the problem.