I know there are mixed opinions among academics about reading and editing manuscripts on your computer prior to their submission for publication. Personally, I like doing both on my computer. I have no problems following an article’s logic and buildup on my computer screen, and I love having ‘track changes’ available to me so that I can edit manuscript drafts onscreen if that is the task at hand. In the old days, an edited manuscript that you had gotten back as several copies from your co-authors could be a daunting proposition to tackle; some of them were a mess in terms of the pencil scribbles in the margins, the curlicue arrows directing you to move this paragraph to another page or to a paragraph below on the same page, comments at the top of the page telling you what to consider to include in the next draft, and so on. It is no easier to go painstakingly through such an edited manuscript than it is to correct a manuscript edited through ‘track changes’. In fact, I think the latter is much easier; you can choose to accept or delete inserted or deleted text, you can accept or reject format changes, and you can move text around as you like and still see where you removed text from in the final version.
I also no longer print out the pdf versions of published articles; I read them online as well. It is a rare occurrence these days for me to print out an article; if I do, it is usually an extensive review article. I simply don’t see the point anymore of wasting all this paper. Additionally, the articles of interest are freely available for the most part, so that there is no danger of getting access to an article and then suddenly losing that access. One can get around this problem anyway by saving a version of the pdf file on your own computer to peruse at a later date. I am one of those people who welcome a paperless workplace and household. Offices stay neater as do homes, a win-win situation all around.