Why go to university?

I think everyone should attend university and finish it, because you will learn essential subjects. I mean the subjects that you will be able to use in your life.

In my opinion, we need to learn these subjects such as semiotics, psychological ins and outs, and so on.

For example, economics is taught to students of history or psychics. There is a mixture of different disciplines.

In my view, it’s better to attend special business schools. You will be taught important knowledge and skills which allow you to earn money, and achieve your life goals faster…

I found a few minor grammatical errors and some missing commas. I also changed a word here and there to acheive a more "natural" style. I deliberately avoided using obvious Americanisms such as "college" and "major," although you should learn these if you intend to study in the USA.