Literally...no.
Some of the most evil beings in fiction were written by some of the sweetest people. Helps when they've faced struggles against evil people themselves. It helps when you've seen it yourself and understand the sanctity in presenting that wickedness.
// ditf spoilers
seeing how venomshank reacted when his own sibling attacked sword makes me REALLY curious about how he’d react upon finding out that another one of his siblings is putting sword in potential danger