I exist and you, I'm willing to bet, exist. But the fact that either of us exist says nothing about the existence of a creator, unless I am missing something. I am more than willing to be enlightened.
Sorry, I'm only responsible for my own beliefs. My beliefs are based on my life, my experiences, my logic, and therefore would be of no help to you.
I cannot 'prove' GOD exists to anyone else, mainly because I find it hard to prove something whose definition varies, person to person.
I just think of the zillions of creatures who have no brain at all, and yet build the most intricate constructs. I see motors designed on the molecular scale, within living cells. I see a planet full of life that 'adapts' to the environment. I see a pile of Eukaryotes form a single collective conscious in a human form, and ask "Why do I exist?".
The answer is always the same.