Once mankind invented the building, we needed to see how huge one could be built — how broad & how tall. If there was a Babel Tower, it’s testament to the disaster written in such ambition. If there wasn’t, there is still plenty of crushed bone to be found in archeological sites that certify the same.
Once mankind invented evil, the compulsion to see what grand scales it could reach swelled, as well. It’s written in our history.
Nothing can be endlessly stacked without groaning under its own weight — not even evil.