““It is the principle of Business, which is more fundamental than the law of gravity. Wherever you go in the galaxy, you can find a food business, a housebuilding business, a war business, a peace business, a governing business, and so forth. And, of course, a God business, which is called ‘religion,’ and which is a particularly reprehensible line of endeavor. I could talk for a year on the perverse and nasty notions that the religions sell, but I’m sure you’ve heard it all before. But I’ll just mention one matter, which seems to underlie everything the religions preach, and which seems to me almost exquisitely perverse.”
“What’s that?” Carmody asked.
“It’s the deep, fundamental bedrock of hypocrisy upon which religion is founded. Consider: no creature can be said to worship if it does not possess free will. Free will, however, is free. And just by virtue of being free, is intractable and incalculable, a truly Godlike gift, the faculty that makes a state of freedom possible. To exist in a state of freedom is a wild, strange thing, and was clearly intended as such. But what do the religions do with this? They say, ‘Very well, you possess free will; but now you must use your free will to enslave yourself to God and to us.’ The effrontery of it! God, who would not coerce a fly, is painted as a supreme slavemaster! In the face of this, any creature with spirit must rebel, must serve God entirely of his own will and volition, or must not serve him at all, thus remaining true to himself and to the faculties God has given him.”
“I think I see what you mean,” Carmody said.
“I’ve made it too complicated,” Maudsley said. “There’s a much simpler reason for avoiding religion.”
“What’s that?”
“Just consider its style—bombastic, hortatory, sickly-sweet, patronizing, artificial, inapropos, boring, filled with dreary images or peppy slogans—fit subject matter for senile old women and unweaned babies, but for no one else. I cannot believe that the God I met here would ever enter a church; he had too much taste and ferocity, too much anger and pride. I can’t believe it, and for me that ends the matter. Why should I go to a place that a God would not enter?””

Source: Dimension of Miracles (1968), Chapter 13 (pp. 88-89)