[sherry-sherry]

Have you ever seen a book?

They have huge gutters and margins, and not-quite-black text on creme/off-white/never-actually-white backgrounds... why? Because it's easier of the eyes for long blocks of text.

[washbasin]

This page isn't a long block of text. Look at what Reader View does to pages. It doesn't ADD gutters and margins, it shrinks them.