Most people don't die. A few people out of a large total number might be a lot people, but relatively speaking 99% of the party crowd won't die. 90% of them won't even experience a serious case - and that's of those that even catch it in the first place. Death/serious cases below the age of 60 are nearly nil in Germany.People are really, really bad at understanding risk. People cannot visit sporting events, concerts, and clubs if they are dead.
England has the arenas filled and the streets and pubs filled to the brim with people ignoring any restrictions that may still be in place after each english soccer victory and while the cases are on the rise, the people are OK with it. Of course not all people, but quite a lot people