Most engineers I know at companies with all the nice perks (myself included) only work about 40 hours a week. It's not an either/or. Besides, it's my most prod

Most engineers I know at companies with all the nice perks (myself included) only work about 40 hours a week. It's not an either/or. Besides, it's my most productive 40 hours a week, during the prime of my life. I don't want to spend that as a work-robot who dutifully produces exactly 40 work-units, no more no less, then vanishes into the night. I find it much more fulfilling to have both personal time AND investment in my job.