"You get out," I said. "The other one too." But after I had got them out and shut the door and turned off the light it wasn't any good. It was like saying good-by to a statue. After a while I went out and left the hospital and walked back to the hotel in the rain."

This is the original ending and I think that it is far and away the best one. The bluntness of it all perfectly captures the absolute shock Frederic must have been feeling that night. I feel like some of the other endings, especially the baby one, just add too much unnecessary detail and take the focus away from the fact that Frederic has just lost his soulmate. I love tragic endings because I believe that catharsis is a very powerful tool--it really captures the attention and heart of the reader. This ending does just that.

Catharsis

"I suppose, from a modern moral point of view, that is, a Christian point of view, the whole bullfight is indefensible; there is certainly much cruelty, there is always danger, either sought or unlooked for, and there is always death, and I should not try to defend it now, only to tell honestly the things I have found to be true about it" (439).

I felt that this passage was essentially a metaphor for life. 

Bullfights are like life--they are cruel and death is inevitable.