Scientific Religion

I have recently read a post by a scientist who is also religious. He wondered why people were having a go at him for believing in a god, whilst at the same time being a scientist. The reason is thus: Your ability to believe in something that there is no evidence for is intellectually dishonest, and makes everything you do as a scientist suspect. Belief is at best irrational, and at worst delusional. Why would we accept any work that you do as "truth" when you clearly demonstrate that you are delusional?