Because some people have this idea that the stock market is able to perfectly understand risk in all situations to the point that it can be used to make decisions itself.
I’m not sure what to say here other then. A fool and their money will soon be parted.
I personally don’t know anyone that holds that opinion as you stated above .
If you honestly believe that, I certainly hope you’re not actively trading the market!
In many cases, that's correct - but not when the issue is emotional and outside the normal investor field of expertise.
Because of your use of the words "some people" and "perfectly" I'm reading your comment as sarcasm.