How may cases of polio do you see in the world right now? How many of smallpox? These diseases killed millions before vaccinations wiped them out. If they kept killing at the rate they were at their peak, millions more would have died from them by now. So, yes, vaccinations do save lives.
Note the word “opinion” above. Where are the studies that prove you will get immune diseases?
Now, some of the COVID “vaccines” are not actual vaccines, but RNA manipulated gene therapy and who knows what they will do in the long run. Nobody does. Not even your Dr. McCullough. I personally got the J&J, including boosters, as it is one of the ones that is an actual vaccine, not a gene therapy. I guess we will see.