The folks who dedicate their lives to helping the unfortunate will always assume that there is good in others

I would say, not always. I feel like most of the success AES right now were created by people that were like this, but also who understood that there are other who fundamentally, are evil. That will always seek to hurt you if they can, t take advantage, to violate. One has to really watch the enemy, and understand it. See how cruel it is. It's why I cannot stand when I see leftists that try to humanize billionaires and their fascist bootlickers. To feel any form of empathy towards them. This is a flaw. It is weakness. They WILL take advantage of it to hurt you if they can.