Should attendance in Universities be mandatory?

Attendance in Universities should not be mandatory because university suppose to teach you responsibility and the student pay for his class. Well when high school a teacher always tell a student to enjoy high school while it last because when you go to college or university no one is going to check for you but attending college teachers have no choice but to fail you after missing a certain amount of class no matter your grade. A student can be passing a class but did not show up but still fail because they did not show up however I think the biggest part of responsibility is the fact that the student is still getting there work done. Another response is the fact that the student is the one who is pay the teacher to teach him/her so that if the student does not want what to go to class that day then that is the students call because it was there money.