Have you ever seen a dead human body? Some day, we will all become one.
What will your body look like when you are dead? How will it feel?
Real dead bodies are all around us. Everyone we know dies. Everyone. That face we see in the mirror, the hand we hold in the movies, the coworker we beat or who beats us for a promotion, the person serving your coffee as you read this - we will all die. Our bodies will lie still and the energy systems of chemical bonds, electricity, gravity, heat, motion and momentum will no longer constitute themselves together as a person bearing our name. It will all dissipate into other forms which themselves will be no more or less noble until they too give way to forms that follow.
Hiding from dead bodies is basically a luxury item (and a delusional one, at that).
Whether or not someone actually sees a corpse depends largely upon the society that person lives in.
In a society where people have no health care or hospitals, people die out in the open a lot more. On the side of the road, in their home, waiting for a bus, in a store, out in the woods. Poorer countries are often ravaged by war and brutality, which create corpses en masse.

All in a day's work.
In affluent societies, we take great efforts to keep dying and dead bodies in the hospitals, away from public exposure. If someone dies out in public, an emergency vehicle comes immediately to remove the body. Any mess is cleaned up right away, leaving no trace or indication that someone - a person came to that place and died. In our anonymous societies it is very difficult to leave any trace that we ever existed at all and our death is no exception.
Any bystanders who witness a public death in such societies are encouraged to move along, forget that we saw anything and pretend as if it never happened. But we do not forget death.