"we don't know how the universe was created therefore God done it"

No, it is like trying to run your entire gaming business using only marketing research and studies. You will end up getting shocked as your game flops despite all the data and science saying your game is perfect. Then you will be shocked a game like Elden Ring, one that goes against all the marketing research and studies out there on how a game should be designed, is as successful as it is.

You have an issue of being online too much and overthinking it all.

Otherwise we've just dismissed the scientific principles and theories behind biology and evolution.

When it comes to psychology, 80% of studies posted in scientific journals fail to be replicated. The issue is you are assuming this “science” is more reputable to just random opinions online when it is just as valuable.

Science is not some gospel or truth. It is just an experiment and the results of said experiment. If the experiment is weak or biased, the results are pretty meaningless.

With much changing over the years.

Like when eggs were good for you, then bad, now good again. Like how Pluto use to be a planet. Or how much psychology has changed in general.

Most studies are not to be taken as fact just because they exist, especially ones that use surveys or statistics. Some are strong enough to become scientific theories, but that is not true in psychology.

It seems most people just lack street smarts and think book smarts actually matters outside of the internet or a university.