I appreciate you responding to my criticism despite my analogy, but I was concerned you might try to discourage or prevent people using such an analogy in future, without offering an alternative (and despite me having no ill intent behind it).
As for why I used an analogy, I don't know what reason will satisfy you. People use analogies to help other people get an intuitive sense of an idea which might otherwise be hard to explain. If you understood my point without needing the analogy then that's great, but I don't want to assume that analogies are never helpful.
I'm not sure why you need an analogy to get your point across.