We know of a half dozen human coronaviruses that stay in circulation rather than burning themselves out, so there’s reason to worry this one wouldn’t either. The exact question is probably academic, because it won’t be politically feasible to maintain social distancing when severe cases are down 100x, but we’ll definitely want to keep vaccinating.
The Dutch have started burning their bicycles in protest. That's a pretty good sign we're at the end of the public's patience for this. The deaths are terrible, but you know what killed more people over the past year? Cigarettes. And they sell those at the grocery store.