Growing up we used to have these kid/youth centres that were run by local Catholic organizations. We used to hang out there after school. Ostensibly the point was that there'd be 30 minutes of catechism doctrine, but we didn't really care about that. To us it was just a the place where everyone would be. I miss that so much. A place where you can just go and meet people your age, without any reason to be that and without having to pay an entrance fee.
Now as a grown up we have community centers, which are run, not by the Church, but by sort of hippie-lefty people. But it's not really the same atmosphere, because you go there, and it's just one demographic of people. It's not quite the same.
There's also pubs and climbing gyms which people often use as low effort places where one can mingle, but again, it's not quite the same. I don't like drinking multiple times a week and I really don't like climbing.
Here is the issue. As you can see from my previous comment I agree with you, that cyclists are a danger from a pedestrians perspective.
The problem from a cyclist's point of view is that having to stop every block to let pedestrians cross, would really really really suck on a bicycle; just losing all momentum and having to start from a stop. It would also probably be bad for the knees after a while.
I would agree with all of those points, except for one. I do not think it is less dangerous to pedestrians. I remember when I used to live in the Netherlands, it was uncomfortable being a pedestrian because there were so many cyclists. They are still going fast enough that if they crash into you, you can expect a concussion or even worse. And they do not respect the traffic laws in the same way that cars do. And because of the numbers of them it is hard to keep track of them.