I believe many people feel the same way with you. What you learned in college has nothing to do with your future work. But this does not mean that college is a waste of time. Give a few simple examples:

If there is no college diploma or diploma, it will be different for a person who just went to look for a job. This is likely to determine the level of your future work.

If you haven't been to college, the people you contact are different.

If you don't go to college, your horizons will definitely not be as broad as those who go to college. Not to mention some aspects and abilities of studying, practicing and seeing problems.