I have read Wikpedia and even a few web-sites dedicated to it... but I still really do not understand what it really is... and why it is "POWERFUL".

My questioning is not  I REPEAT NOT  intended to hurt anyone who agrees/understands/follows this Relgion... but I am hoping that there might be some people out there, who are willing to spend the time and tell me (and I am sure countless others), an honest answer of what is Sciencetology is all about... in a digestible reading amount, I would be greatful. 

I personally do not believe in "God" in the Christian sense (though I was more or less raised Catholic)... if that helps you "frame your answer". 

Thank you,