Because HTML is not a print format, it has to adapt to
different screen-width, styles and font-sizes by automatically
flowing stuff around.

When writing one wants a max line width between 60-80 char,
your automated linebreaks would jigsaw the reading experience.

As a demonstration I've manually included such linebreaks in
this post. Have fun reading this on different devices.

In HTML it's the reader who decides about the line-width
by resizing his browser. There are only limited useful cases
where br-tags are appropriate.

This all is no new wisdom, it's the absolute basic a respected
web programmer needs to know about HTML.

So please do yourself (and us) a favor and stop showering pros
with your ignorant amateur advices. This is a Perl board we not
a web-dev kindergarten.