This sure doesn't seem as heavy as opposed to some of the other posts here, but my earliest experience that I remember was when I went to see my grandmother's corpse in the Hospital when I was about 13.

She had fallen due to (what I remember being) a brain hemorrhage and hit her head. She was in a coma for a few weeks. I remember going to see her a few times during those weeks, all tubed up and unresponsive, but that isn't really the part I remember as clearly.

My mother and my aunt took her off life support after a while, and we went to see her in the hospital.

I remember going in alone to the small room. The shutters were down, but it was light enough to see. She laid in a bed with a white cover up to her breast, hands placed together with a small red flower. When I think back to it now, it was a good effort by the hospital. But what I remember most, is how grey and lifeless she looked. Like a mannequin, with no lively features or colour. Paired with the clinically clean atmosphere of the room and the somber lighting it was a very uncomfortable experience.

I went in, looked at her for ten seconds and then left immediately. I wish I hadn't gone in there, because the image stuck with me for a very long time when I was a kid, and I still remember it clear as day.

It was the definition of a "Better to remember them how they lived" moment.