Heat is way worse than cold. Many people can't do harder physical activities once it's around 30 degrees Celsius and/or humid because they would pass out (me included, when it's over 28, I just drive everywhere because I can't stand it outside). The idea that someone in their full health would force me to bike onto the steep hill where I live (and 18 km away from my workplace) is extremely unsettling to me. Public transport is not an option - it takes 50 minutes that way (while just 12 min by car) and the buses and trams are constantly overcrowded, late (or don't arrive at all) - and you definitely can't transport a server (or groceries for a 5-member family) that way.