Warping a loom by hand is a nightmare of repetitive tweaking, drawing each warp end through a heddle and adjusting the tension, one by one and back again. It's like restringing and tuning a guitar with hundreds of strings.

Even hand knitting is slightly better -- cast 250 stitches on to a circular needle then start the next row, only to find 10 rows later you've twisted it and are now knitting a Moebius sweater. Rip it out and repeat (sometimes referred to as "frogging" or "tinking").

Yeah, knitting machines are satisfying in many ways.