The poor scenario that exists by dragging this out is that at some point (a year, 2 years, who knows) that immunity does wear off. Then, by enlogating this process you set up a scenario where the people first infected then open back up for infection prior to this virus running its course with the last groups to get infected. So you create the circle, a continuous loop, rather than a road that ends.
If it ran the course quicker, then the last group of people get it and it has no one to latch onto because the first group to get it still has immunity.
If it ran the course quicker, then the last group of people get it and it has no one to latch onto because the first group to get it still has immunity.
