Some areas such as Amsterdam though are just naturally more ammenable to walking, cycling, and transit. Cycling in 90+ (F) temperatures with high humidity (very common in the summer in the US midwest or south), or even just walking very far or waiting very long for a bus is pretty miserable. I'd arrive at my destination literally dripping with sweat and really unpresentable.
Somehow Singapore being 1 degree from the Equator manages to have a bus network, a metro and practically caps the amount of cars on the roads.
Also, you seems to underestimate how bad the weather in Amsterdam is. Cycling on a bridge through rain against the wind at 5 degrees (C) isn't very fun either.
When I lived in a more hotter climate, 30ish (C) was a-okay for some people to cycle to work and then get a shower at work. It's all about infrastructure really --- be it showers, speed limits or bike paths.
That’s ok if you have showers at work. I’ve never worked anywhere that had that. And now you’re taking multiple showers a day, and washing sweat-soaked clothes more often, using more water. If you are a person who doesn’t tend to sweat a lot it might work out. For me, I sweat profusely and would literally be dripping on the floor and my saturated clothing clinging to me after a bike ride on a hot day.
Can I interest you in AC cooled public transport then? That is another option that will make it easier and faster for you to reach your destination than a car.
Besides I am not sure if you are willing to drop 7.50 EUR per hour for parking in the center. Most companies in Amsterdam have none or only limited spots for parking anyway.
My wife used to live in Bristol, which has plenty of hills, and she was biking everywhere. That's why she has a nice butt.
If one needs excuses to justify having a car and being stuck in traffic, hills ain't a valid one. 30km/h is great, makes for less noise, less air pollution, and now we see, it makes it for 0 traffic deaths. Much better to have the option to reach a grocery store on foot, by bike, by public transport and car than have no options but a car. That makes for less cars on the road, and, funnily enough, 30km/h on a non-busy road will often get you faster to where you want to go than 50 on a busy one.
Again, that's why we Europeans are both happier and fitter than our American counterparts.
I'm not sure how common the term is (I heard it in a YT video), but a "Dutch hill" is wind, because the Netherlands is very windy, and anyone who's ridden a bike in heavy wind knows that it can be just as much an obstacle as a moderate hill.