It takes strength for that. Perhaps the difference in thinking
  is akin to my choice in this area; many people find a lack of
  empirical evidence and decide to be atheist. I see the same lack
  of empirical evidence and decide to be agnostic. For some
  they're interchangable. For me, it's not. To me, the lack is
  rather like a possibility. It remains-to-be-seen. I don't need
  proofs because I'm not looking to believe or not believe. I
  simply don't know either way, and I'm ok in the "I don't know"
  state because I have other more humanistic things to attend to
  than beliefs in this matter. For some, the lack is evidence
  means one can shift to "God does not exist". They're atheist.
  I'm cool with that, as long as it doesn't become anti-theism,
  which then leads to wars with words... and wars with words often
  lead (eventually) to war with swords, as it were. Enough time,
  enough power, it's possible. Lack of political clout I think
  keeps that from happening just _yet_. But to me, going from a
  "don't know" / "not enough evidence to support" is like going
  from 0.00001% to 0. A rounding error. I look at myself. I could
  easily be rounded out of existence statistically. But I'm still
  here smile emoticon I can't speak for anything else that might
  be roundable out of existence, or logically proven out of
  existence. I simply don't know, although I learn more heavily
  towards "likely not" yet the lack of empirical evidence compels
  me to just leave the I don't know an I don't know.