> 1) How am I supposed ro go to the beach with two kids, stuff for picnic and surfboards on a bike

Easy. With a trailer. My wife and I have two bike trailers for our 3 kids. The oldest will often ride her own bike (she is 5) and then when she gets tired, you can throw it in the back and she climbs in.

Another friend of mine has one of those stretched out e-bikes where he hauls his two kids around. Oh, and he sold his car in order to buy it.

> It should be a healthy, safe mix of both. This is true, but we are no where near the point of a "people jam" (or bike jam) in much of the US/Canada.