In other words, why is there anything at all, instead of nothing?

edit: After thinking about it for a while i came to the conclusion that with the big bang theory came space and TIME. So basically, there was no time before the big bang. So according to this theory, whatever triggered the big bang, existed in an infinite time so it always existed.

To be honest any claims scientists make about how/why/where everything was created is just a good a guess as you or I could make.