“But I really really want to do some good thing! I just need to cut some moral corners to do it!”
Yeah. Everybody says that when they want to do something evil. Everybody. What? You think Hitler got up in the morning and said, “How can I do something Evil today?” Nope. All the great monsters of history have always told themselves that it was the great goodness of their Ultimate Goal that justified the evils they must commit “in the short term”.