Quote Originally Posted by Buffalobiian
On the other hand, disregarding whether Ushio "knew she was going to die", ( we can't really test this speculation anyhow), it was Tomoya who gave into her desire to go for a trip. It's not like Tomoya had "I'll make her lasting days happer" on his mind when he did that neither, since that would mean he already believes Ushio is done for.

In the end, Tomoya ended up with "Stuff it, if Ushio wants to go on a trip that badly, let's go."
That's really no different from my speculation that Ushio knew she was dying and didn't want to die trapped in her bed. We don't know what Tomoya was thinking. He had already experienced Nagisa dying, no matter what was done (or actually nothing could be done by the doctors), so he probably knew there was no hope left for Ushio either, short of a miracle, and miracles come more often to those who seek them, not those who lie at home hoping for them. Perhaps he thought that granting Ushio's one last wish would also somehow save her.