Why is this one being downvoted when in fact what OP is saying is a 100% truth? Vaccines won't stop the spread because it's a sliding window problem. You vaccinate 10m people today, then you vaccinate 10m people tomorrow, by the time you vaccinate another 10m, the first 10m already lost their antibodies. We'd have to vaccinate the entire population within 4-6 months, which is impossible given the current state of things. There are no transactional guarantees, so to speak.
On top of all of that, vaccines do not stop the spread, but just ease out symptoms. You can be vaccinated and your symptoms can be so mild that you won't even know you are sick. So you'll walk around infecting others.
Because "stop the spread" is a very nice goal, but not the actual one. "Slow the spread so hospitals can handle the load" is closer to the real goal. Without the vaccines, too many people get sick at once and more people start dying.
On top of that, it's not just the vaccinations. Those who get the disease are also helping to slow the spread as they build their own resistance.
There's been enough resistance to the vaccines that it's probably impossible to end this with the best possible result, so we're going for second-best now. And that still involves keeping as many people vaccinated as possible.
Looking for about half a dozen papers confirming your following words
> You vaccinate 10m people today, then you vaccinate 10m people tomorrow, by the time you vaccinate another 10m, the first 10m already lost their antibodies.
On top of all of that, vaccines do not stop the spread, but just ease out symptoms. You can be vaccinated and your symptoms can be so mild that you won't even know you are sick. So you'll walk around infecting others.