Let's say following: all the urban infrastructure is car-centric, period. Even in most developed European cities the car drivers are privileged. Why should we b

Let's say following: all the urban infrastructure is car-centric, period. Even in most developed European cities the car drivers are privileged. Why should we bike riders use side lanes/walks and not main lanes for example? On rare sundays when vehicles traffic is nearly absent in my town, we do really enjoy cycling the main roads - it is much faster to get to any place even if my town is relatively good place for bicyclists - there are many separate cycling-only roads and bridges.