I've said know rather than believe because I think that evolution doesn't NEED my belief to be true.
It works, if you do the right experiments with bacteria you can see it happen over a few weeks, it's pretty obvious that it is NOT intelligent in any sense of the word (compare the structure of the human and octopus eyes for one of many examples of where vertebrate evolution went badly wrong), and, in short, it's just something that's there.
It's a combination of natural forces that occasionally manage to come up with something beautiful, and also produces endless horror stories like drug-resistant superbugs, BSE, AIDs, etc.
It doesn't need my belief. It doesn't need me to like it or hate it. It's just there. There may or may not be some sort of supreme being that got the ball rolling - I doubt it, but I have no way to know - but whatever may have started it, the process itself is NOT intelligent.
