Main Question or Discussion Point
I myself can't use CAD but just wanted to know because I think it is much more fun and artistic. (maybe I'm just the wierd mechanic).
You'll hate paper drafting even more then, there's no ctrl x, ctrl v, ctrl c, etc etc on paper. Drawings can be done once and then auto update whenever design changes are made to the part files. Nearly everything about CAD makes the design and drafting process faster, easier and less tedious. That's the whole point of CAD.Plus working all those hours putting and erasing even the smallest details for hours on a screen sounds tedious and boring (boring as in a hole in my brain!)
If your intention is to kill time then I guess paper is better.hand drawing is a good time killer though