It is the most important thing. But for most people that is nowhere near good enough. Your life will still suck, you will just get to be healthy. It is a huge leap from "I'm protected" to "I can jump on a plane and fly to a concert where I'll hug my grandma".
Yes, nobody wants to go to the hospital, or die. But what you call "getting on with life" for most people doesn't include having to continue wearing masks, socially distance, not being able to go to DJ shows, not being able to travel, not being able to hug relatives, etc. It's still a massively debilitating social pain in the ass, let alone the hamstrung economics.
Your personal vaccine makes incremental headway, but it doesn't solve the rest.
Much of the world seems a bit deluded that once they get their vaccine, life returns to normal.