Well, there is no need for extremes like that (doing everything we say is not a prerequisite to having a good experience here... though listening to the really good advice by more experienced artists also does not hurt, ignoring it will only make you improve your skill much more slowly).
It is true that you seem overly defensive and reluctant to make changes but everyone, including the artist, is of course entitled to their own opinion about a piece.
But well, giving C+C is already a reward in itself to the one giving the C+C as it is good practice at improving stuff, so not only does it help the receiver but also the giver to improve their own skill, the skill at making stuff better starting from different levels of "bad". People give C+C, as jun already pointed out, on their own accord, for their own reasons and their own motivations, whenever it suits them and when they have time for it. Just as no one is entitled to get replies/critique, also no one is entitled to see their C+C put to use. That is always up to the receiver.
When giving C+C it is true that it feels much more satisfying to see it being understood and properly applied or at least seeing that an attempt is made to apply it rather than it just being completely ignored or deflected but again, if hoping for it to be used and applied is the only motivation behind giving C+C, then of course an apparant lack of receptiveness might feel demotivating and unsatisfying for the giving side.
But what the receiver of the C+C does with it is completely outside of the givers control, so imo, at least part of the motivation for giving C+C is "best" when it is "selfish" in nature, given by the giver as an exercise in thought about and application of the craft primarily for themselves to practice their own skill at finding issues with and improving a "bad" piece. That way, there is less disappointment if the receiver is unable to apply it for any reason, because the time spent working on giving C+C was/is not a complete waste, not purely a random act of help to only teach someone else but also to learn for oneself.
So... keep creating, take what you can from feedback, have fun, live and learn.
