My opinion based purely on anectodal evidence says the essential reason why bikes are highly preferred by the people of Amsterdam is that it is mostly a flat ci

My opinion based purely on anectodal evidence says the essential reason why bikes are highly preferred by the people of Amsterdam is that it is mostly a flat city. Compare this to Istanbul, where even seemingly trivial journeys have 100m climbs in it. Example for a popular home to work commute: http://cycleroute.org/?slat=41.061029&slng=29.006811999999968&elat=41.0543842&elng=28.98497999999995&mode=DRIVING http://cycleroute.org/?slat=41.061029&slng=29.00681199999996...