My answer is not represented on this list. Is it just because you missed it? Or is it because you can't rebut it?
I will try to address your answer.
Every person has their own understanding of the world - and really, those who take the time to ponder its nature have already far surpassed the majority. After thinking about the universe and how your own life fits into it, people come to choose a worldview that they feel is most consistent with what they see, how they feel, and what they understand to be true.
You seem to have chosen (?) non-religion, which is still a worldview, because it seems to make the most sense to you. Clearly everything else is wrong; you'd have to think everything else is wrong to really believe what you believe.
Others, however, came to the conclusion that Buddhism, Christianity, Mormonism, or some other religion may be most consistent or perhaps the most empowering worldview for themselves - after following the same process of questioning your surroundings that you may have followed yourself. To me, it seems fair to say that your view is valid for you, and a religious person's view is valid for them. One of those views is probably right, and I guess we'll find out when we die.
Though of course we all think we already know. =)