WHY cannot we feel the air pressure?

An enormous ocean of air lies above our planet. Air presses on humans with a force of more than 15 tons????

Imagine having three trucks on top of you. Yet these "trucks" never crush a human being. The reason is that the "air column" presses on us not only from above, but from all sides evenly.

Besides, we also have air inside us. And that air comes under the same pressure. The pressure of the air from inside balances the pressure on the body from outside. That's why we don't notice the pressure on our body.