"I'll believe anything," said a friend of mine, and she meant it. She believes equally in paganism, Christianity, Buddhism, and Judaism. She believes angels will protect her children when they're unsupervised, that the universe will give you wealth if you "put your desire out there," and that abortion is acceptable. I haven't asked her if she believes in the horrible pain of a baby being ripped apart in the womb or if she believes in demons.
I bring this friend up because her belief epitomizes the attitude of so many people. G.K. Chesterton expressed it this way:
"When people stop believing in God, they don't believe in nothing--they believe in anything."
How can it be logical to believe that all truths are equal? That worshipping nature is equal to worshipping Christ? Either Christ is God or he isn't. It can't be both.
What about ethics? Aren't there some things that are simply, objectively, morally, wrong such as murder, theft, and rape?
And objectively morally right, like feeding the poor, and protecting the vulnerable?
We might quibble about details, but I hope we would agree on the basic premises.