If you are wealthy enough to throw parties with security, guest lists, 200+ people, it's a rounding error. Extremely cost effective and useful. People purchase

If you are wealthy enough to throw parties with security, guest lists, 200+ people, it's a rounding error. Extremely cost effective and useful. People purchase palatial estates primarily to throw huge parties and events, to impress the elites. It's not usually to walk around a mansion for your own private enjoyment (at least for those with penthouses in major cities).