well, I can't help but point out that the vast majority of our channels are very much STEREO to begin with.
But those of us working in the world of modern electronic music, relying mostly on software instruments like Omnisphere and Kontakt and Diva, etc. If your situation is recording a traditional rock band and you're tracking guitar, bass, vocals, drums - I get that most of your sources should be (and naturally will be) mono to begin with. It all sounds nice and sensible when you read it, but it leaves a guy like me rather confused, because. These articles / tutorials / knowledgeable-studio-elders go on and on about how Mono tracks are easier to locate in the mix, free up space for better use of the stereo field with panning, avoid phase issues, result in cleaner mixes, etc. I don't mean the ones saying "reference your mix in Mono" (though I'll probably post on that ubiquitous line later, for related but different reasons). I can't tell you how often I come across online articles, youtube videos, forum threads, etc in which the gist of the message is "You Should Probably Be Mixing in Mono." It's everywhere, just do a Google search on "mixing with mono tracks" if you'd like to see for yourself. I'd like to discuss, at some great length, the notion that "We should be mixing more with Mono" and what that means to an Ableton user who works mostly In The Box today.