Because if you announce people can go and visit others at home the infection rate will shoot back up again.
What if one person has four or five kids, who all visit with their partners, etc.
So let me ask you something. Genuine question.
What is the difference between me going to visit a relative in their home and going shopping?
Or more to the point that relative going shopping and having their son visit?
After 7 weeks and the numbers dropping , something as simple as that can make a huge difference. Yes I know 'risk' and asymptomatic and all of that. But at what point do you put that aside? Given that the virus won't go away anytime soon so are we to remain at home for the next 6 months? Because the risk will always be there.
People are going out anyway. Going to people's houses , going the park en mass, visiting others , hanging round the streets all day etc in fact part of that hasn't changed since day one.
I guess my point is, at some point you need to trade off on what people can do to control what they can't. Because even when you tell people to stay at home they don't listen anyway.
If you constantly put an entire population into lockdown using fear then they eventually will rebel anyway. So why not offer something so small and put aside the risk element because at some point you have to let people out their homes, and that risk will still be there despite that.