I really have a simple belief, I live my life in accordance with that which is most likely true. Religion doesn't offer me this, thus I don't subscribe to religion. And just because science can't answer all the questions doesn't mean I get to make up my own rules. When science doesn't have an answer, you go with what science does know and you make a prediction based on those scientific facts. That way ensures that you are making the most correct possible decision. I'm also more comfortably with saying "I don't know" rather than "X did it" which is just sheer arrogance.
I believe some people can be reasoned with & others can be ridiculed, to change their views. Both methods work.