One point is that the consequences of getting COVID are likely to become less serious over time as prevalence is controlled (via better vaccines, we hope, masks

One point is that the consequences of getting COVID are likely to become less serious over time as prevalence is controlled (via better vaccines, we hope, masks etc., if we're not fatalistic), better drugs are found. Another important point is that currently, the risks of long COVID seem not at all well understood. "Unknown risk" is quite a different thing than "low risk" or "high risk". The lengths to which it makes sense for people to go to avoid it right now depend on those risks, so lying low seems quite sane to me. A worse problem still is, I think, that "we're all going to get it" is a self-fulfilling prophecy: viruses have been unconquerable in the recent past, but this is 2021, we have incredible understanding of the mechanisms (no, not most of the details: they're not all worth knowing) that should give us incredible power over them at some point in the relatively near future (as in the next few decades). If the next few decades, why not the next few years? If we believe it's "inevitable", we'll make it so. (not to mention abandoning effective measures like masks)