I welcome you to design such a block of streets, though keep in mind that it still needs to be maintained. Also when you have a grocery shop, something needs to load and unload groceries. Also, you have fire trucks, ambulances, police cars that need to have access.
It's going to take a long time to change our built envrinoment and habits, but it's not inevitably human nature to want cars whipping through the places our kids play. In fact, given a choice rich people rarely allow this in their neighbourhoods.
If you want to see what spaces look like when cars are deprioritised, NL and other European countries are leading the way. And you don't have to ban them entirely. Just stop through traffic, and limit to local residents. Also reduce speed limits and make public transport a viable alternative for people.
Drink driving also used to be normal and "inevitable". It's possible to change.
I wasn't talking about sirens at all. You make vehicle-friendly neighborhoods if you want emergency vehicles to be able to get there. The moment there are vehicle-friendly neighborhoods, the locals will inevitably come with reasons and excuses to have their cars parked as close to their house entrances as it gets.
There are lots of lowering bollards in the UK. That allows you to do things like slow emergency vehicles, or allow motor traffic only at designated times.
