The worst STEM majors earn more than the best high school graduates. Those in the bottom quintile of ability who go on to major in STEM have lifetime earnings of about $2.3 million, compared to $2 million for high school graduates in the top quintile of ability; business majors do slightly worse than STEM majors. The worst social science majors earn about the same as the best high school graduates, and the worst arts and humanities majors earn less.
Full time salaried job versus burger flipper - yes, that's what the degree gives you.
Why does "best high school graduate" mean burger flipper? There are plenty of trades that pay a good wagw where you will get ahead easier by putting in your time learning the trade than going to college. A lineman can pull down 6 figures, also plumbers, electricians, etc. "no college" doesn't mean "completely unskilled". Most of these jobs will be a straight 40 hours/week and done, so they are coming out ahead of a similarly paid computer scientist working 60 hour weeks.