Those things are in the norm where I live too (europe). My son has played outside unsupervised with the neighborhood kids since he was 4.
sorry my 2yo was editing...
Oh, and in my little part of America, letting a 3 year old walk to a neighbor's house isn't considered neglectful. It's the norm here in my neighborhood. And none of the kids in my little neighborhood has been abducted for as long as I've been here.
Additional things that are the NORM in my neighborhood that many people here at MDC have issues with:
Letting kids play in their yards (front and back) without direct supervision
5 year olds riding bikes in the streets with just older kids supervising
6 year olds and up crossing streets and walking to the library