There are jobs out there which justifiably require a PhD qualification, e.g. industry research labs, defense research labs, national research labs. I think new PhDs should try hard to seek these jobs rather than typical developer-type jobs that would not necessarily benefit from the skills one gained while working towards their dissertation. This is a difficult mandate to follow, but I think a useful one from a career-satisfaction perspective.

Edit: See 'meat-space' vs. 'net-space' comment below. https://news.ycombinator.com/item?id=7373273