>So a "rational" actor in economics seem (to me at least) to mean the typical selfish bastard who only acts to maximise their own profit outcome, no matter how its defined, and excludes a green warrior buying a good or chattel to NOT use it, or somebody buying it to give to charity, or buying it to round up another charge to get north of a shipping fee but its a nonce purchase and has no intent or purpose..
That's not true at all. Rational is defined as someone acting to maximise their utility (roughly satisfaction), which is capable of encompassing "a green warrior buying a good or chattel to NOT use it, or somebody buying it to give to charity, or buying it to round up another charge to get north of a shipping fee but its a nonce purchase and has no intent or purpose" perfectly fine.