(Like $50/month for a family of 6 for the highest tier of health benefits)

Working 9 months/year with a seriously light load over the summer and a requirement to publish maybe once/year...

So even if a comparable PhD is making twice as much, they are probably also working twice as many hours (or close to it), and they aren't getting nearly as many job perks as professors. My wife has 3 professors in her family, and the amount they get paid for the number of hours they work is astounding to me. Even the social work professor has a beamer and gets to go on 2-3 cruises per summer.