In Switzerland a bike is a tool, it is not a fitness statement or a recognition of sporting prowess it is just a tool to get from here to there efficiently. Families are out on bikes at all ages. Bikes with trailers behind to drag the youngest along. The youngest progress to bikes with no pedals to scoot along and get good at balance. Then kids graduate to small genuine bikes and head out riding.
Everybody rides and locks their bike to the nearest fence, gate or traffic pole. Bikes need to be secure, it needs to be waiting for you as you head home.