Why do you think boosters are unnecessary?
I don't think we will be able to eradicate this disease. To my understanding, it will become endemic and literally everyone will get it and then encounter it again and again during their lifetime. A similar thing happened with the Spanish flu. It is mostly harmless now, because most people have an adapted immune system and they already get antibodies from their mothers milk. But when it hit an unprepared humanity, it was brutal.
The only things we can do now is prevent society from collapsing on the collective level and make sure you have the best chances of getting through the illness well on an individual level.
Vaccine side effects are not something you have to accept. They are something you have to weigh against your individual risk of the illness, which is greater for virtually everyone.