Hamburg has a lot going for it, it's just a shame the locals are so cold, unfriendly and boring.
Like I said, it's a pity, but for a city that claims to be Germany's "gateway to the world", its people are awfully parochial, small-minded, and terribly lacking in curiosity.
The mother of Karl Lagerfeld once told him that, yes, Hamburg is the „gateway to the world“ but you have to go through it.
She meant, being willing to exit through it.
One could argue, that this entails a selection bias in who comes and stays and who actually goes. And over time you got a population which prides itself to be something others have been/are.