UPDATE: Reworded inquiry.
Besides being frowned upon, what are other reasons for avoiding empty paragraphs in HTML?
REVISION:
Context
Currently, adding a blank paragraph in our content management system requires hitting the Enter key twice. I personally find empty paragraphs to be unnecessary. If you need a new paragraph, simply hit Enter and adjust spacing with CSS. For instances where you want to write immediately following text (such as displaying code), utilize a line break with Shift+Enter.
Inquiry
Is there a solid rationale behind discouraging the use of empty paragraphs? Is there an established standard on this issue? At present, my concern is mainly philosophical -- it seems that incorporating empty paragraphs may not significantly enhance page loading speed or save much space.