I don’t know how I can help you understand the utility of analogies (you recognized the rhetoric as such, yet simultaneously seem stuck on the fact that analogies don’t establish a literal connection). However, I’m not sure if that’s actually the problem, or if you’re feigning confusion in attempt to offend me. Granted, it would seem an odd choice for you to claim incompetence as part of an attempted insult.
Regardless, I’d be happy to help you in any way I can.