The constant need for focus was my biggest misunderstanding. I thought it would be like running, where you can listen your inner self, breathing, or enjoying the sight.

    20km/h : human radar scanning hidden corners. no more looking at girls or you'll hug trees.
    30km/h+: better have swift brakes, any surprise feels like a threat.

Somehow it almost makes biking moot as a vehicle, since there's no speeding bike only roads there will always be obstacles nearby (mom/baby, slow biker/runner, soccer balls). I really wish there was large scale plans to build bike pathways as those for tramways.