Uncle Troll said:

I don't agree. I choose whichever position seems most appropriate.
Usually this turns out to be bottom. But there are occasions when top
posting seems to clarify things a bit, or enables me to get my point
across before the reader even knows what's in the original post.

So you cheerfully admit that some days your entire head is engulfed in
darkness. That explains so much about you, Normy.