Maybe adults really don't grow up?

Every Fridays and Saturdays I attend classes. The classes are for a very important subject in the ACCA course, therefore many people attend the classes during those two days. So every time I attend the class I get a great deal of discomfort and I feel really irritated. Here's why - the class is always packed like a tin of sardines, and the air-con cannot really cool the place down thoroughly. By now, I am sure you can already imagine how the condition is like having a stuffy lecture hall packed with people that keep on yakking.

The lecturer is there trying to convey her materials and the class is hardly ever focused on her. Yelling from the front so that the ones at the back can catch what she is saying is already a pain for her. Students then conveniently make matters worse by talking. Is there really so much to talk about?

Time and again, the lecturer has expressed how much she detests students making so much noise and disrupting the class. She was very, very close from leaving the class the night before as a matter of fact. Sadly, students do not really learn from the experience, and the students' lack of respect and discipline simply keep repeating itself over and over again every week!

The surprising part is this - at least 90% of the students are students aged 19 years old and above, and some already working like myself. As far as I know, people at the age SHOULD already be matured enough to behave themselves. Note that I use the word, 'should' because I do not seem to see any maturity in these bunch of people. Personally, I really cannot see why it is so difficult to just keep quiet and listen to what the lecturer has to say for 3 hours on Fridays nights and 6 hours on Saturdays. Considering the fact that most of them come from work on Fridays I am pretty sure they have already done a fair bit of talking for the better half of the day. 6 hours in a Saturday isn't too long of a time for someone to keep quiet and listen attentively, considering all of us have 24 hours in a day.

Writing this reminds me of my previous post 'ADULTS DON'T GROW UP ANYMORE' because from what I see, people that are supposed to behave like adults are acting far from what an adult should be.
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Maybe adults really don't grow up?