Job search, am I one of the lucky ones.

I have just finished an under-grad degree in physics. I have several pretty decent job offers already, after sending out about 10 applications, I got interviews for 5. It looks like I will be able to start out at 40-50k/year working a 4 day work week. I could earn more if I wanted to bust my ass, but I only have ~30k to pay off and I'll be doing just fine.

All my friends who studied engineering/physics/math type stuff in college have had no trouble finding employment.

Why is it so impossible for people to find employment in the USA, as I understand it many industries are simply begging for skilled workers.

Second, if your in school now, why for gods sake are you studying something like anthropology, english, gender studies, or for some similarly useless degree. People I know who are in these programs joke about how useless they are and how they have no real skills, its not like its a secret. It just blows my mind that the same people then complain that there are no jobs for them.