I am not quoting Quran as interpretation may differ by some so here are my thoughts out loud:
Some of us believe that Mecca and the Kaabah were chosen to be a centre for mankind in the same mould as New York United Nations building.
Just because it has become a centre for religious ritual holy holidays to fulfil falsely the call to gather mankind to it so that sins are washed away, does not mean we should reject the truth behind this call.
Others say that Petra was the home of the Last messenger but this area is in the process of decay; flooding, earthquakes and is far from a place to gather multitudes to show them how to implement the Quran just social system.
I once read, no reference available, that in the past a man asked how to fulfil Hajj and he was told to go to Damascus, the then capital of the muslim world. Do we take from this that any centre that is picked my muslims becomes a place to gather mankind or do we stick to the one at Mecca?
Kaabah, a thing that protrudes has been interpreted to mean the bone of a young animal and nothing to do with THE kaabah but environmental issues regarding hunting young game, or any other far fetched understandings presented by those who want to get rid of the baby as well as the the dirty water of N2I we have today.
I repeat, just thinking out loud with no thought of forged in stone beliefs that should be changed if proof is provided, sound, logical proof.