College is not mandatory, but you must decide what exactly you want to do in the next five to ten years. Most people who go to college don't have any idea of what they want to be doing, and usually just go with the flow their whole life. There're many good threads on this forum, but here are two you should read in particular:
Is having a degree worth the time and effort? and
Is a job just a job?
I went to college (and got a degree), albeit for the wrong reasons. Mostly out of fear and not knowing what else to do. Despite this, the field of study I picked was actually one I was very passionate about. Sadly though most other students I had classes with didn't care much about what they were studying. To them it was "just a degree" to get a job that was "just a job". During my short stint as an employee after college I noticed the same attitude among the other employees I worked with. This blatant indifference is something I'll never forget.