I would argue, pretty strongly, many engineers do not work similar hours (or work at such "efficiency") in as stressful a way as the lawyers are working.
Of course, I don't argue doing such a thing is necessary or even useful to being a good engineer, just that i think you are giving pretty short shrift to the other side of this :)
Perhaps a lawyer's working hours tend to be more "efficient" or more stressful. My interaction has been primarily limited to in-house patent attorneys, and they don't seem to work appreciably harder or be more stressed out.
Work-related stress is a big issue. Regardless, putting in long hours at work, regardless of stress level, means less time for family, friends, hobbies, recreation, exercise, sleep, etc.
yes, but (and I'm biased), it seems plausible that a higher percentage of engineers enjoy a larger fraction of their work than law associates. I have no numbers to back this up, but very few people pick up corporate law as a hobby.