After all, Nazism is just an ideology, and like all ideologies, what you make of it depends entirely on what you bring to it. Those who are naturally violent, like Adolf Hitler, bring genocide and attacks on Germany's neighbors. But gentle, kind, and loving converts to Nazism, do as you know make a name for themselves by feeding the poor, curing the sick, and holding the hands of the terminally-ill poor, around the world.
Voldemortism is also just a magical orientation, and like all such orientations, depends no more and no less than on what you bring to it. If you are incurably gothic, you will probably get nothing out of it but death to muggles. But many other followers of Voldemort become outstanding and kindly citizens, known for their public-spiritedness. This is why "Death-Eaters" are known for their charity work on six continents, and are fast putting Kiwanas and Lions Club out of business.
Satanism, too, is just one of many choices off the shelf of modern religions, no better or worse than any other, which will in no way affect your kids, should they choose to hang their hats on that particular sharpened peg.
Quarkerism, too, is just a denomination. Like all denominations, what you make of it depends no more and no less than on what you bring to it. If you're a violence person, then you will join the world-wide Quaker Jihad, and blow up people on a weekly basis on every continent except Antarctica. (Since Quakerism just happened to spread by men on camels carrying swords, and there are no camels in Antarctica.)
Thank you, Professor Aslan, for explaining to your intellectual inferiors why they, too, can stop worrying, and learn to love the jihad. We now realize, as Shakespeare put it, that "nothing is either good or bad, but thinking makes it so."
And I think you're a poor logician with a shaky grasp on the relationship between ideas and actions. But no doubt in your own mind, you're brilliant.