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People in general tend to behave this way. There will always be outliers. But most people are usually only willing to do things for personal gain.

So yes

Would you say you agree generally with this instinctive human motivation hierarchy?

(1) PROTECT YOURSELF
(2) PROTECT YOUR FAMILY
(3) PROTECT YOUR TERRITORY

Yeah that list looks pretty good.

Ipso facto, "Most people who claim to help the weak [or do pretty much anything else for that matter] are only doing it for personal gain."