The young are the old, in due time. I'm guessing that the majority of young people today would prefer to grow old in a society that will care for them, that has demonstrated that it will care for them, rather than one that is prepared to "throw them under the bus" to "protect the young".
All of us are young at some point and many of us will grow old. We must be treated fairly in both states. The sensible way to do that in the current situation is to establish some sort of protocol for interaction with each other that will allow economic life to go on, because obviously everyone wants that, but without exposing the vulnerable to the virus. And that doesn't mean locking them up until it's gone, because that is still throwing them under the bus. After all, there is a substantial minority of people with chronic diseases etc that are still young, and have many productive years of life ahead of them. But for the rest, also, there is what I say above: if we throw the old under the bus now, we'll throw the young under the bus also, when it's their turn to be old.
And this protocol must necessarily be a strict form of social distancing and some measure to reduce transmission, like wearing masks. We know that works. Until there is a better solution, that's the best solution.
So there's no point in saying "this can't be done, you'll find me at the pub". It has to be done. And it has to be done for the good of everyone, young and old, vulnerable and strong. There's no point in thinking that "I'm young, this doesn't affect me" and carrying on as before because "it only kills the old and sick". One day, you yourself will be old and sick. And whatever kills the old and sick at that point will get you, unless the young and strong around you take care of you, like we are asked to take care of the old and sick right now.
And if young people don't care for the old and sick right now, they're digging their own graves.