Also, printing from a text editor isn't very sexy, you'd want at least a bit of styling and page layout, and that's well outside the scope of a text editor.
Anyway, your point of view may be different but for that, I think there are packages for printing.
I suppose it wasn't included because it is a rather difficult to do it right and few people are interested. There are many things that can go wrong: OS compatibility, page layout, fonts, color or lack thereof... I implemented printing in software once and was a real PITA.
Not only Sublime, but nearly all editors these days lack a print feature.
Also, in fact, I write out all email in a text editor first, then copy/paste into webmail so the watching eyes don't / can't fingerprint my typing! /little paranoid!