You might be right, but you don't actually know that for certain. If your consciousness emerged from nothingness once, there's no reason why it could not do so again (albeit probably in a completely unrecognizable form).

Personally, I am agnostic as to whether reincarnation is a thing or not, but honestly, when taking the numbers into account, oblivion sounds like a much better deal than spending my next billion lifetimes as a bug that lasts for only a brief time before being eaten in one of countless agonizing ways. (There is a reason why the Eastern religions that believe in reincarnation tend to emphasize that the ultimate goal is to escape it.)