In Western society, the act of marriage confers (often vastly) increased wealth and status to the lower status partner, and it is usually women who prefer to "marry up". Furthermore, it is also vastly more fulfilling and satisfying to care for one's own children than one's mistress's children. No two roles could be more different, frankly.
Yes, and yes. The viewer automatically crops whitespace in the margins to make best use of display space. Most documents will be smaller compared to the printed version, but still very readable. Anything with the "article" style looks great. Nearly every document with more than one column needs to be reformatted though.
> books on PDF are electronic books. Kindles don't handle them well, but tablets do.
Pdfs on current generation kindles (300dpi) look great, actually, as long as they are computer-generated. Scanned documents can be hit-or-miss, though.
Knuth uses vanilla TeX (which he wrote, btw). Also, the typesetting on the linked text is absolutely gorgeous. It looks much nicer than most LaTeX documents that I have seen. Wouldn't mind checking out the source.