i mean what if bitcoin isn't exist , what if bitcoin wasn't created.
Why bother asking questions that actually have no use for discussion. For example, Bitcoin doesn't exist? the answer is that you will not know anything about Bitcoin, nor will altcoins and shitcoins be born, you will not make money in crypto, and maybe you will be a fiat slave forever. That's a typical answer, so what kind of answer do you expect?
I agree, besides the question doesn't really make a lot of sense because Satoshi created bitcoin by putting together several concepts which already existed, this tells me that something like bitcoin was about to be created by someone, and even if Satoshi did not created bitcoin someone else could have created something similar, the difference is that we do not have any way to know if that hypothetical coin will be as good as bitcoin or if that person will be generous enough to make the code open source and give bitcoin to the world instead of keeping it for himself.