Vaccinated people don't want to get a breakthrough infection
Yet Christian Drosten (virologist and professor at the
Charité in Berlin) said in an interview in early September that there may well be a point where the healthy and vaccinated should indeed prepare for their first actual infection, it shouldn't necessarily be something to be scared of. Covid is going to become endemic, and we should accept that to a first-order approximation we're all going to catch it, and most likely keep on catching it.
Of course catching it if you're vulnerable is bad news. Catching it when your local hospitals are overwhelmed is bad news. Catching it next summer, if you're vaccinated, not elderly, and otherwise healthy? You might not even notice.