I've read your response to me, not all the comments you've made to whoever else you're talking to. If you think you've explained away people living in different parts of a city not being a problem to someone else, copy and paste it. I won't go looking for it.

In the rest of your statement you seem to have conflated when I said that "I've been to other cities" with "I always go to other cities to do various things" and that's just not what I said. Nothing except my first paragraph explaining how other (much better designed) cities than my own that I've been to have a distribution of experiences throughout them was about travelling between cities. Only within.

This city, the one I live in, has many things in many places. Some of those things are restaurants or parks or events, some of those things are people. I must travel within my city to experience them, and they physically cannot all be within a 15 minute walk, even if my city were much better designed. Not everyone I am friends with will be able to live within a 6 block district. Not every restaurant I would like to eat at will be in my district. Not every sports team or theatrical performance will take place in my district.

I'm not talking about things that take place in other cities. I'm talking about my city, where the opera theatre and the hockey arena are a 15 minute train ride apart. Where the research university and downtown business district are a 10 minute train ride apart. Where there are 7 sizeable hospitals that it would be hard to arrange a couple million people into walking distance around (and only some of which have the capability to offer certain specialized types of care). Where the best bars and restaurants are mostly concentrated onto a handful of streets already, but some streets are not walking distance from the others.

You can call this a problem of design, but the city can only support one hockey arena, so "The hockey arena is far away from the University" isn't something you can solve without moving billions of dollars of infrastructure (and likely creating entirely new problems) or designing good transportation - unless your solution is professors and students can't go watch live sports. Similarly "The hospital I live near doesn't have a Gamma Knife program to excise my brain tumor," can't just be hand waved away. That's a multi-million dollar machine requiring highly specialized staff and it doesn't need to be at every facility to manage the patient load.