We were evolved to be rational, but only in the environment that we evolved from. The environment we have now is far from small hunter-gatherer tribes, yet we are still equipped with the same rationale mechanisms. Hence, it's not working out perfectly.
Maybe if we restructure our society to simulate what it once was or at least some parts of it, we can better utilize our rationale mechanisms.
I shouldn't say we evolved to be perfectly rational of course. it's more that we evolved to approximate rationality in a manner more efficient than actually calculating everything. see "how outfielders catch fly balls" as an example of a rationality shortcut.
We were evolved to be rational, but only in the environment that we evolved from. The environment we have now is far from small hunter-gatherer tribes, yet we are still equipped with the same rationale mechanisms. Hence, it's not working out perfectly.
Maybe if we restructure our society to simulate what it once was or at least some parts of it, we can better utilize our rationale mechanisms.