1. I can live car-free. Not feasible anywhere I'd ever lived before, but here I have lived without a car for a quarter of a century and never really felt the need or even desire to own one.
2. The food. The sheer VARIETY of it within a 10-minute walk of my apartment door is astonishing to me. Take that to 20 minutes and with public transit and it's mind-boggling.
3. The technology. I haven't carried cash in well over a decade and a half. I can find and order the weirdest, most obscure things imaginable and it will be at my door in two to three days. (Without paying for "prime" service; paying extra sometimes gets you overnight.) How weird or obscure? How about a full, live, Asian giant hornet nest? Or liquor made from sweet potatoes at a guy's farm? Or Daoist "fulu" (magical charms, basically) blessed by a Daoist priest at a "famous" temple? Or ... you get the idea.

I came here "for a year or two" in 2001 and haven't gone back beyond three short visits since.

I love the amount of city nature my city has. There are parks built as buffers between the neighborhoods, making it possible for a lot of people to go for a walk whenever they feel like it. I personally live just a minute's walk from a huge park that I get to cross daily to go to work.
Another thing that I like is how well everything is set up. Public busses drive almost exclusively on their own private roads, which means they're never stuck in traffic. And bicycle paths are also separated from normal traffic as much as possible. I can get to the central train station with a 10 minute bicycle ride and never have to cycle on a main road.

People in my country like to make fun of where I live, because it's a 'new' (50 year old) city without any culture or soul. But most people are genuinely surprised at how nice it actually is when they're here :)

here are almost all the people i want to have around me. that's really it.

Milton Keynes? Or another country? :p

The Netherlands, but I guess each country has a city like this :)

Gotta be NYC right?

Wuhan, China.

A big ass lake and nothing else.

You can order live Asian giant hornet nests in NYC?

Big crowded city and I’m an introvert, but if you’re open to it you can have mini-interactions or chance run-ins with all sorts of interesting people or “human behavior” just over the course of one subway commute (NYC). The stereotype is that it would be bad run-ins of course, like muggings or unwanted encounters, but in my experience when there’s multiple people around, bystanders are actually willing to step in, help, talk to you and make sure you’re okay.
People can be truly genuine in that moment, even if they have to continue in their way afterward, even if you’ll never see each other again. That is so much more comforting to me than the fake-polite thing and car culture of other US suburbs where I was sometimes raised.
Sometimes the stranger encounter thing is just looking at another person and sharing a wordless “WTF is happening?” look, laughing, and connecting that way.
But you can also be totally left alone if you want to be!

Enough humans around I don't have to worry about things just not existing here. I need kitchen shears? Yep. I need toilet paper at 3am? Yep. But I can also just walk around the neighborhood. Although it's not very walkable being America. We also have trees! Love trees.

Some of the best nature in the world