Is it really just hair?

Is cosmetology really just mostly hair related? I’m in a career highschool doing cosmetology classes here since it’s relatively cheaper than a school like Aveda or Paul Mitchell, right now I’m only a sophomore and we’re in our studies at the moment, not on floor yet clocking in hours.

I’ve scrolled through this subreddit a few times to see a few saying it’s mostly just hair. I’m not really interested in hair in the long run, I’m super interested in esthetics though. Should I just continue to go to school & do esthetics school or is that a waste of time and money?