Why I share on Google maps?

I got acquainted with the system of Local Guides purely by chance during a business lunch at McDonalds.
I came across an application in the play market and it interested me, after a couple of minutes, I uploaded my first photo.
After a while, I received a message in the mail, it was written in it, how many people watched my pictures. I was very pleased that without any special effort I can help people.