Sweden needs that law because it’s a tiny country where you can’t be outdoors for extended periods for more than 6 months out of the year. The US is huge. People aren’t really missing out if they don’t go on other peoples properties.
The notion that we stay inside during half of the year is funny. Normally foreign media loves to write about children sleeping outside in the winter and all-weather forest kindergartens. And then we have all the german tourists that love camping and hiking.
I understand that it seems strange to hike on other peoples property. It's not that I have to go looking for privately owned property, it's that I can't imagine ever having to keep track of land ownership when I am out hiking, camping, skiing or picking berries or mushrooms.
Tell me you haven’t even visited Sweden without telling me you haven’t ever been to Sweden.