Kiddo, my questions are related to the big picture of existence. Therfore, I need to know your viewpoint before refuting or agreeing on your viewpoints. Some people here on sajha like to argue just for the sake of winning the argument! I am not one of those. I like to have a intellectual discussion rather than ad hominem.

Kiddo, I found some fallacy in your logic: "Sometime things happen without any reason or cause." Water vapor cannot exist without water! Bracelet cannot exist without gold! Pot cannot exist without clay! Tree cannot exist without seed!  Give me an example that doesn't have a cause? You are making me smile here.

I was expecting a deeper level of answer when I asked "why is evolution happening?" I understand Darwin's Theroy of Evolution through the process of Natural Selction. I think you didn't understand my question. I mean to say what is the ultimate goal of Evolution?

I know I asked some extremely difficult questions like Big Bang, but we are talking about reality here, so we must understand each other viewpoints. Therefore, my questions are not out of the topic. I appreciate your viewpoints.