I don't have to agree with someone else's political beliefs - or even generally like that person at all - to sell them a widget or buy from them a tool or raw-materials package; all I need are skills and a profit margin.

Indeed, and we are able to do so via the artifices of trade and commerce - the only thing that need be agreed-upon is the price, the quantity and the quality.

Right, and I'm saying that the landscape has changed enough that many of the behaviors and characteristics we evolved back then, are maladaptive today; just because most humans happen to have a certain trait, does not mean that others should hold that trait sacred and kowtow+mold themselves to it.

There are other examples, too; ones with even fewer exceptions. Our minds and bodies both help hoard energy; that trait-set was useful when animals were difficult to hunt, but today it just foments carb-poisoning, obesity and a raft of other pointlessly energy-efficient design tradeoffs. (The modern world is so much more energy-abundant than the ancestral landscape, yet we can't actually make use of anything past ~8 MJ a day for anything but high-endurance physical exertion. A human brain is like a Pentium II hooked up to a 500W PSU.)