I'm bilingual, I guess? I read books as regular books and as kindle books, and I read articles online (more and more these days), but also can and do read articles in magazines and papers if they're around. I definitely prefer an e-reader for traveling, simply for the sake of packing light (I read maybe a book every 1-2 days even when not on vacation). But day-to-day, I'll take whichever's there.

Exceptions are any sort of book where I might be flipping back and forth a lot (textbooks, manuals, anything with foot/endnotes, or even a book like House of Leaves that's simply formatted in a way that's meant for print).