One thing that repeatedly boggles my mind about travelling in European cities is that they're often strong examples of "we could never do that".

People of all representations bike in Amsterdam (and the Netherlands) with no helmets, all shapes and sizes of people, totally normal, like it's nothing. No ceremony, just a smart default.

It's so frustrating that any group involved in city planning (looking at you Dublin) would look at the existence (not fiction) of this and not want to drop everything to make it a reality in their own city: following the lead from the Dutch over the last 50 years+.