To some degree, yes. Not to the point that I can't or won't do it, but I would certainly prefer books to be printed much wider. I can mitigate some of the issue by keeping my index finger along the left margin as I read, so I have a better idea of where my eyes need to jump to the next line. That technique is impossible with my computer screen, which is more than arm's length from me.

Part of the issue is that I read fairly quickly, so I find myself spending a relatively large percentage of my time skipping to the next line, and it's that frequent context switching that is annoying.

I'm in the same boat as kmoser. I don't like narrow text lines either.

In my experience, books are mostly OK, as long as they don't split up the text in columns. Magazines and newspapers often do have columns that are much narrower than I would like.

The bad text formatting in printed works (including the bizarre decision to sacrifice useful vertical position cues ("ragged right") to imitate the technique medieval scribes used to reassure their patrons they weren't wasting valuable parchment ("full justification")) is a big reason why I avoid them whenever possible.

I am in the same boat as GP, and I wonder if it's one of the reasons I migrated hard to ebooks and online magazines/newspapers as soon as that became possible and never looked back.