Agreed, but part of the teachers' job is to impart that curiosity and interest onto their students. That is hard to do, and only the very best teachers actually manage to do this.
Yeah, maybe when your younger than 16 or 18. If you're at Uni you're an adult and it's on you to study.
If so, why have teachers at all? Give those freshmen adults a syllabus in the beginning of the semester and conduct exams at the end.
”Those who are smart and motivated will get it, and heck with the rest.”
They still have a role in explaining the material and answering questions, but it's not their job to motivate students to study their subject.