Personally, cars and the increase in street parking (reducing visibility) are the biggest factors in deterring me as a parent from having my kids roam the street with some level of freedom. When driving, I also see how many drivers beside me are looking at their phones.
I think back to my childhood and roaming the streets. There wasn't any formal community venue or organisation. No one then or now was going to church. No one was going to a community centre or youth drop-in facility. I don't remember parents coordinating much. We rode bikes on the street, kicked a football and walked to the school basketball court or ovals. Parents generally felt safer about their kids doing that, so it was trivial to walk out front and find another kid to socialise with.
I think back to my childhood and roaming the streets. There wasn't any formal community venue or organisation. No one then or now was going to church. No one was going to a community centre or youth drop-in facility. I don't remember parents coordinating much. We rode bikes on the street, kicked a football and walked to the school basketball court or ovals. Parents generally felt safer about their kids doing that, so it was trivial to walk out front and find another kid to socialise with.