Context: When the cat had string stuck on it I felt the need to help
Speaker 1: There was a cat who had string stuck around it so I had to help
Speaker 2: That is really nice of you!  Is the cat OK now?
Speaker 1: Yeah, everything turned out fine in the end
Speaker 2: That's good.  If not for you, who knows what could have happened.  You must be a very caring individual.