Strange!!!!

Lecture!! Lecture!! Lecture!!
This is what i have to hear for the next 1 year. An incident occurred today. I had to attend a corporate law lecture. The faculty was a young lady probably in her late 20's or early 30's. She did lay down some conditions in the class. "People not interested can mark their attendance and leave the class". This was not the only one she told, but this was the main rule(as far as we students were concerned). As usual, we started shouting break in just 45 mins of commencement of the class whereas most of the faculties give a break after 1.5 hours. She obliged asking us to take a break for 5 mins.
The irony was, half of the class just marked their attendance and started walking out with their bags. The reason might have been many, urgent work or had to go out or anything else. but isnt it the basic responsibility of a student to respect the teacher. And it was not that the faculty was not good. She was quite knowlegeable.
I am pretty much confused. Was it because of the age factor or was she not delivering to the fullest of her ability (according to those students) or was it because of her short stature or the students felt the course was not that important in life or etc etc....
The same applies to the world today. People in the name of being practical have forgotten the need for following some basic principles that are necessary to be a successful human being.