Maybe you can consider another vaccine as a booster if this one did not acted well on you?

I don't see how the booster is guaranteed to be the final answer as the virus keeps mutating and spreading among the very large unvaccinated population.

I personally think that it will become endemic, thanks to the vaccine we would have enough immunity to keep us out of hospital and each time we get the virus it would act as a booster.

This thing is not going to end without something like world wide super strict lockdown(Wuhan style) or world wide vaccination(and probably some combinations as the vaccine itself reduces but doesn't completely stop the spread).