A degree in something like Molecular Biology is obviously of value, even if the holder is a 22-year-old who's never even glimpsed the "real world". But a VERY small percentage of 18-22 year old college students in the U.S. are studying that sort of thing, and an alarming percentage of that small percentage consists of foreign students. More students WOULD be studying serious subjects like that if they arrived at college with several years of full time work and financial self-sufficiency under their belts.
The urban college where I've taken some science courses has a sizeable post-bacc pre-med program, with most of its students having several years of post-college employment. I've had and overheard many conversations along the lines of "So what did you major in in college?"; typical answer: "Creative Writing", accompanied by rolling of eyes and an expression that says, "Yeah, I know, what a silly naive kid I was". IMO, anyone who thinks it makes sense to major in "Creative Writing" doesn't belong in college, and most of the people who did major in things like that, end up wishing they had the time and money back, so they could do college over again the right way.