Yeah as vic said, all the subjects have some importance, ofc you wont like all of them and maybe most of them will be useless taking into account what you will study, However, they are all necesary since if you didnt have acces to all of them then you couldnt choose your favourite ones and therefore you would be tied to just a few jobs;

Also studying is one of the best ways to improve the quality of you life, its well known that educated ppl earn more money and overall have better life that those who have less education or dont have education at all (ofc there are lots of exceptions, mostly profesionals at sports)