Well, one of this days, you might lose your hearing even if you could not hear well from your hearing aids and have to struggle trying to make out what hearing people say. It is good that you can lipread but still miss out a lot and only get about 30% comprehension (be able to understand) of what hearing people say. You might have to use note and pen to write between you and the hearing person. As for speaking, it is good you can speak enough for the hearing people to understand you.
Still it would be good practice if you learn Iran Sign Language so that way you won't feel left out with the d/Deaf people. Being in the hearing world is not easy when there is complication of struggling to understand them. I don't know why you don't like Iran Sign Language. Sign Language is the primary language for all d/Deaf people. Don't you agree with that?