It's all why, why, why with you today isn't it?! ;0P
Seriously tho...I do understand what you're saying but even when you take religion out of it some people don't want to believe we're alone in the universe period. They could believe in anything aliens, narnia, never never land, that Donatello was the best TMNT... I agree, all pretty fantastic but it's something.
I know what you mean when you say that just because it's comforting doesn't make it true or indeed implies that it's not true but I think that's a leap of faith in itself as that's not provable and doesn't really follow a logic either. It's all subjective.
I've had the same sort of conversation with my mum who's quite religious and whenever we talk about this leap of faith that you have to make if you believe in anything and I ask similar stuff to you and she will come back that to have faith is to 'know' that there is something else. So someone like her is never going to ask the question you're asking because they already 'know' that there is somethign out there because they made that leap of faith that you (and I) can't. That's the difference I think, we can't grasp how they think but they can understand why we think what we think (if that makes any sense)... that's when you end up with one of those serene knowing smiles that creep me out...
Have a good one petal.