There is a reason why stones exist. There's actually is a reason for them, not just speculating. Mystery is for mystery. Facts are a different matter. which is why we should find out why they existed in the first place.

I think ceremonial - like churches.

Take yourself back to 5000 years ago. What would you do? No historian has the answer. Just exist I guess, which is what we are doing right now!

I'm looking for questions, not for answers.

Like, why? And does it really matter? Religion is for the dumb. Community?