I actually prefer the modern ones to the old ones (... well some of them at least).

A bit of an aside - I have often wondered what makes "good" architecture, i.e. what is it about a space that means it is still a "good" place to be. There are many examples of both "old", "post-war", and "modern" architecture in London where the spaces are still great spaces and inspiring and welcoming and just work for their purpose, and likewise there are examples where they are depressing and miserable.

What is the "magic formula" for this that makes a building or space work? There has to be some theory on this, but if so why are "bad" buildings still made?