Why we are studying? For knowledge or money? Why we are in depression state?

I have a strong opinion that you should pursue your degree for Knowledge and not money.. One should have a realization that a sound knowledge on any subject will automatically result in good earnings. Alternatively, if your study is Money driven, there will be no way to cut the chase and will push you into depression at some point in time for life.

Discover yourself and know your passion. try to align your study and passion as much as possible. This is the secret sauce for a successful career.

This is an important question and the fact that you are asking says a great deal.
In my opinion, a job and money for that matter are a means to an end. Ultimately we all are looking for happiness, so it's important to ask these types of questions as they allow you think about what genuinely makes you feel fulfilled and happy. As some others already suggested, generally you feel more fulfilled when your work aligns with your genuine interests so it pays to spend time really thinking about what makes you feel fulfilled - what do you like to read about, what are your hobbies, what do you like to learn more about simply because you enjoy it, not necessarily because your have to, then think of ways this activity potentially ties into making a living.
So to answer your question a bit more directly, I think we seek knowledge to further ourselves. Generally furthering yourself means a job that provides enough for you to take care of your needs. If you have knowledge in a field of study that you genuinely like you will typically also find work that if, not necessarily lucrative, at least covers your needs and feels more personally fulfilling.

Sami,

You are asking a good question. When students consider what they will study, many only think about how much money they will make if they graduate with a certain degree/focus. But the most successful people in their careers are people who are passionate about what they do. Steve Jobs believed that "the only way to do great work is to love what you do."

If you have passion for a subject, study it and become an expert in it -- the job and the money will eventually come.

Start asking yourself" "What am I passionate about?" "What do I want to learn more of?" and listen to what comes into your mind.

Good luck in your studies and career!

Do you value money or happiness?

I chose classes that I thought were interesting and challenging. I'm not rich but I do love my job.

This is a very good question! And you are very observant. Too many of your fellow students are in pursuit of a piece of paper (degree), rather than a true education. And what is really sad, many schools make it almost impossible to fail. As long as you keep paying your money, they keep right on taking it. Sadly, too many positions require a degree, any degree, before a person can apply for the vacancy.

I have met some people who somehow managed to finish academic programs that they clearly should not have pursued. Somewhere along the way, someone should have flunked them out. But this did not happen. And students, who are paying dearly for this education, don't truly care to get what they are paying for. They are all too happy when professors cancel classes or let them out early. I take night classes, that are supposed to be 3 hours long, yet they never last longer than an hour. No one seems concerned that they actually PAID to have that professor speak for three hours.

When I got my first degree, it was less expensive. It was different times. We idolized our professors, and were always hungry for more. We would find them in the cafeteria, or at the nearby pub, or visit their office, always wanting to know more. Now, it is all just a mouse click away.

There are still some students who are truly trying to learn, and I commend them. I hope that you are one of them! True knowledge, and understanding, are transferrable skills, applicable to many aspects of both the personal world and world of work. The critical thinking skills you are already developing will also serve you well!

Best of luck!

I believe the answer to your questions lies within the individual. Some people attend college to obtain knowledge, some people attend college because of the likelihood of an increased salary upon completion, and some people attend college for both, knowledge and money.

You have to search within yourself to determine why you want to attend college. There is a plethora of information online, at your local library, etc. available to you for further understanding and guidance.

I wish you much luck in your future endeavors...!!