Because reading from the top of the page down in logical coherent order
befuddled the hell out of him "mm" wrote in
message ...

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

Maybe with it being shorter you can figure it out now.