If you set your internal P value at say .01 that seems great. Except your conducting lot's of experiments constantly. https://xkcd.com/882/ And when you do that you regularly show correlation when none exists.

Considering how many things used to be deadly, I can see people living with fairly low P values because false positives only need to be less deadly than false negatives for things to work out.

IMO, this also explains why people are risk averse. Generally, survival is more about avoid a few low probability bad events than having a long string of extra special awesome days.