Drawing is some thing most of us learned to do since primary school. It is a way to help people express their emotions, to put away stress, and to enhance creativity.
Initially, many people have trouble expressing their emotions, some use drawing to help them. If they were feeling happy, they could use bright and warm color. If they were sad, they could use dark and cold colors. This helps some people to express themselves better.
Secondly, drawing has the ability to take away people's stress. When people are focus on their drawing and the details, they won't be able to think about all the other things. This way stress will not take over people's body.
Lastly, drawing will enhance people's creativity. Like everything else, you practice hard enough you can get better. People need to think of something draw, just by doing that, is creativity.
However, you don't have to draw for these reasons. You can write, play music, read, act, run, and all kinds of other things! Do something that makes you feel happy.
However drawing is the top of my list. :)