Can we use evilness to good things?

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hi, im just curious? well at this episode, spiderman will use venoms power help other people, knowing that venoms power is much more on the dark side, but he continously uses it, but somehow at the middle part he became consumed with this power, and later disregard everything including his mission, if you were spiderman, would you still use that power to save people or just remain as the good ol spiderman?