capitalization - Shouldn’t "Heaven" and "Hell" be capitalized, as they are the names of places?

Shouldn’t Heaven and Hell be capitalized, as they are the names of places?

Answer

No less an authority than Fulton Sheen had the galleys for his latest book come back from the typesetters with “Heaven” and “Hell” knocked down to lowercase. He carefully re-capitalized each occurrence. When his editor called to request an explanation, he gave what I think we can regard as the definitive answer to Nicholas’s question:

Because they’re places. You know, like Scarsdale.