A higher number of people die of the flu and common cold every normal year because we don’t do lockdowns. Are you okay with that? Why or why not?

If not, then you must admit that, _of course_, increasing longevity to the absolute maximum possible extent should not be the only goal of public policy. And then it becomes clear that we’re talking about degrees. How many deaths are worth how much misery, suffering, and lost time among healthy people? Reasonable people can answer that question in different ways, but clearly the answer isn’t “zero”.