And the thing is - people wouldn't HAVE to stay locked up, or home, if they could just follow the new rules of common decency. Wear a mask, stay 6' apart, and avoid busy locations as much as possible. So, if the beach is packed, go somewhere else.
At home in our day to day life, we order our groceries or do parcel pick up. We shop online as much as possible. We only go inside a store if absolutely necessary, and every single time we step foot in a public indoor building, we wear a mask. Even though venues like bowling alleys and swimming pools have opened back up, we don't go. However, that doesn't mean the kids are stuck with nothing to do. Our son has resumed his trumpet lessons - they now do their lessons (one on one) outside, spaced well apart from each other. Our daughter has resumed her riding lessons, which take place in an outdoor arena with a (tiny) maximum class size, and all students are distanced not just 6' apart, but 20' apart from each other in a huge indoor arena when tacking up their horses. All equipment is sanitized between classes.
As far as seeing their friends, we bought the kids tablets for Easter, and so they are able to connect online every day with video chats etc... We have a small circle of friends whom we know well (as in their exposure/risk) and trust, and have bubbled with. They have occassional outdoor play dates. We still visit our immediate family, but we are smart about it. We try to stay outdoors as much as possible, and if that's not possible, we don't crowd right on top of each other. We distance as much as possible in the house. And again, it's not a regular thing.
We are going on "vacation" in two weeks. We rented a cabin at a campground, and are bringing all our own groceries. No worrying about crowded lobbies, running into people in hallways of hotels etc... We will explore all the great outdoor venues like gardens, beaches, historic sites, go whale watching and/or hiking, roast marshmallows at night at our camp fire etc... Basically, we'll stay away from people as much as possible.
Life during Covid doesn't have to stop, it just has to adapt. Just like our grandparents and great-grandparents did when faced with challenges like pandemics, wars, massive droughts and depressions. They didn't stop living, they just changed how they did it.