<< yeah, but, not believing in speed limits isn't the best example because speed limits EXIST without a doubt, you can go outside and look at the 55mph sign and see that. but you can't prove hell exists/doesn't exist. >>
True dismal, but that's where you're faced with the persistant what if question. I think you need to make the decisions about what you believe for yourself. The catch to that is that I do believe that, no matter who thinks what, there is an ultimate truth that is incompatible with what some people believe. So your first decision about belief has to be, is there one or more 'truths' or is everything true? If you decide it's one or more, that should be motivation to get cracking and start looking for them.