I'm an Atheist. I don't hate religions. I just believe in science that's all. But what I realized is that many wars, conflicts happened and still happen because of different religions. This is silly!!
I have friends who are jews, christians (catholic, evangelic orthodox), moslems. None of them asked me why I'm not religious. But from time to time they're arguing with each other and I'm just sitting there and shaking my head.
Science works, but 'how' and 'why' does it work? Unfortunately, science will forever lack the means to answer these questions as the scientific method lacks the ability to explore and comment about real-but-abstract phenomena, e.g. mathematical principles governing physics in general, or the act of perception from which scientific knowledge can be inferred. Because science cannot explore anything universal enough whose properties distribute to everything, it will never be a source of complete understanding, let alone a complete theory of knowledge in general.