> there are plenty of dark places just outside your city
In the eastern half of the US and the western 3/4 of mainland europe, there are very few spots that are below bortle 4. In these regions of the world, people in big cities (i.e. most people) would still need to drive 1-2 hours just to get to bortle 4, let alone below that.
If you live in England, for example, there is nowhere you can go to see a truly dark night sky. If you live in New York City, it’s a 4 hour drive, and even that isn’t completely dark.
In the eastern half of the US and the western 3/4 of mainland europe, there are very few spots that are below bortle 4. In these regions of the world, people in big cities (i.e. most people) would still need to drive 1-2 hours just to get to bortle 4, let alone below that.