RE: Metaphor? What For?
I agree with you on use of metaphors. I enjoy reading English books but sometimes there are so many metaphors that I get confused and frustrated and don't want to finish the book anymore. It starts getting boring and as you said: shout it at every opportunity and it will lose power. For me (not a native speaker) it's much better when there are just a few metaphors and the text is clear and easy to read and understand.
Thank you for sharing your thoughts!