They, and almost every other European country, have already made that mistake. This decision is comparable to what Italy did on February 29th when they had 10% of the cases they have today. But Denmark is (if you correct for the smaller population) already at 60% of the cases that Italy has.

Switzerland and Norway are in that same boat. Spain is getting there, it's the country whose numbers are growing the fastest. France has elections on the 15th, 'nuff said.

Only Germany is comparable to that 10%, and they aren't doing anything either. They do have more ICU beds than others, but it isn't a great consolation.

They still get infected, so they can still pass it on to others.

Everyone is possibly a transmitter. We are protecting the old and weak, not the young and healthy.

We know so little now that it's better to be safe than sorry! We're talking about millions of lives!