-You have to apply be accepted and enroll in classes, they do force people to apply.

-People who don’t like school generally don’t go to college.

-There is no law requiring people to go to college unlike grade school.

-Can’t be accepted unless a high school graduate or have a GED.

-You can drop out of college anytime.

-There are jobs that doesn’t require college education.

-College is not for everyone.

-Generally academically poor students can’t go into most colleges.

-Few people became wealthy without college education.

-Financial Aid (apply is voluntary and on merit scholarships you have to keep a certain grade point average)

-Some people don’t have the willpower to go to college (don’t want anymore schooling)

-Some people go to college because they want a job which pay good money to take care of family.

-Some jobs require a college education.

Those are some reasons and I am sure there are others, besides I am in college.