Baked in

Increasing our IQ points doesn't make us nicer or better people. If anything it can potentially make us more complicated and prone to over analysis. 

Analysis paralysis. 

Humans can create narratives for their lives and sometimes stop there which can be both good and bad. 

Some skip the headache of asking the deep questions but then potentially suffer more consequences through the lack of introspection. 

On the other you have people who delve into nook and crannies of issues. They think before they leap and often more readily avoid major missteps but then suffer through overthinking the possible outcomes. 

In other words, there is no perfect under any circumstance because our imperfection is naturally baked in. 

Perhaps the optimum is to exist somewhere in between and know when to stop just at the right spot every time.

Good luck with that.