I don't need to "believe" things that have mountains of evidence to support them. I hold the view that it is overwhelmingly likely (not certain), on grounds of evidence and reason, that the theory of evolution explains all the beauty, diversity and complexity of life on Earth. You believe in God. That's a notion that has no evidence to support it (a matter discussed here ad nauseam and which I will not revisit) and which can't be arrived at via the use of reason. In this context, and in the context of science, that's how I'm using the term "belief." You hold your belief with such unshakeable conviction and certainty, despite the absence of evidence, that you see no harm in obliging small children to be made to believe it too. After all, that's how you came to believe it too, in all probability. That's highly irrational. And not very nice.