What is the exchange of information in the field of IT?

Question

IT education

Recently, I have been moving into IT. He drew attention to the fact that there is an active exchange of information. People ask questions - they are often answered with such a sheet. It all takes time.
What is the reason for such initiative to help others, to disseminate information specifically in the field of IT?
And this is a global trend.

Answer 1

specifically in the field of IT

you have the wrong impression.
This is connected with psychology, and not with IT
. The sheet is answered where the author of the question failed to formulate normally and you have to answer a dozen sub-questions or describe all the options that the author did not specify
. Also graphomania is not excluded

Answer 2

In addition to all that has already been said, serious resources like StackOverflow are monitored by potential employers in the face of large companies. So sensible answer, reputation is a good plus.

Answer 3

When you answer the question:
1) You remember the forgotten.
2) You increase your competence by analyzing an interesting case (practice).
3) There is something that he himself did not think about.
This is not only in IT. It's just that IT people have created a convenient infrastructure for themselves for this.