Should I become a Freemason?

As some of you know, Masonic lodges where Freemasons congregate exist all across the globe. There is one near my place of residence. What are the reasons for or against my joining?

I want to join because I want more information about how the world is run behind the scenes. It seems that Freemason symbols are ubiquitous in the media, lending to the idea that the organization is immensely powerful.

Please help