If I lived somewhere with f ree college I would just stand lectures just to do it. Learning shit is fun. I loved Organic chemistry. Building molecules and shit. Only thing I enjoyed more than that was Geology. I took that shit as an elective and god damn it was fun. I'd have changed majors if I had taken it earlier in my schooling but it was literally my last semester. Also kinda rough job market... And that's in an already rough job market.