After all, there was no logical reason why we shouldn't be able to go back the way we'd come.

And there was only one logical reason for that, too.

There is no logical reason why they wouldn't want to play for him.

They had no logical reason to have their guard up.

And suddenly, for no logical reason, he had an idea.

There was no logical reason for the other man to stand down.

There was always a logical reason for everything he did.

There was really no logical reason for her to stay any longer.

There was no logical reason to fear either of those two!

That is the most logical reason I can think of.