I know this has been asked a lot, but I have to ask myself for an opinion factoring my own background: I'm a 18 year old high student from Spain, who has to choose his career in the next few weeks. I used to think I would study engineering at university, but during those last two years at high school I've been changing my mind significantly. First of all, what is taught at engineering doesn't really interest in the way physics does. Indeed, I mostly wanted to study engineering because since I was a child I've been disassembling and reassembling computers and all kinds of electronics (including recent Arduino projects) and the jobs a engineer can get are more similar to this "vocation" I had (building and designing electronics). However, in those last two years I also realized that physics classes REALLY interested me. Knowing how the world really is and how it works. As a child I was also interested in astronomy, though now I have found other fields in physics that interested me even more. So I'm more or less sure that physics as a career would be more interesting and fun than engineering, but what would I do after college? What does a physicist do exactly? Would I really struggle to find a job in my field? This uncertainty is what scares me most, as if I choose to be an engineer finding a job shouldn't be too difficult and I could also study physics though books and/or courses even if I wouldn't get any official acknowledgement.