Build on brownfield sites in cities

[PoliteCritic]

This is the cry of people fighting against the building of new homes in the countryside. I think they are wrong.

I live in a City. Over the last five years lots of green areas have been built on. I went to Surrey at the weekend and they have lots of green spaces in between houses as well as proximity to green belt space. It felt leafy and green. In my City with all the odd bits of green spaces being built on, the City feels more and more concrete like.

There has to be a limit to building in cities. If you build on every green space except small parks serving enormous populations, then you make cities very unpleasant places to live. Why should places like Surrey live in far greener surroundings with access to large green spaces, and yet call for ever more building in Cities?

We need to build on these green spaces as well and in pretty ordinary fields to expand villages. You can't keep your view and expect those in cities to be left with virtually no access to any green space.
AIBU?

Interesting re Netherlands, I've travelled over a fair bit but not the west much.
I've noted as soon as we hit the continent, roads and traffic are thinned out and instantly driving is easier /"France /Belgium /Netherlands.

Driving around the Netherlands is a joy because roads are is much emptier. The only issues we've had around that zone is the an twerp ring road at rush hour.
It also seems like lots of countryside and space. Is the Netherlands really as densely packed as we are?.
Is anywhere else on the continent?

@Giggorata that should be rolled out everywhere.. It's disgusting how they throw up these ugly ghettos.
It makes everyone feel miserable and one would think with everything we know about mental health and well being and respecting things that look better it's astonishing we are still throwing up brutallist ghetto.