WHY WOULD THE ROTHSCHILDS ONE OF RICHEST FAMILIES BE SELLING OFF THEIR PRIVATE COLLECTION OF HEIRLOOMS & ART?

When you browse the goods, they aren't just selling a few items here and there; they are. No, it's a two-week auction giving away piece after piece...

How could a family that once had a net worth of over one trillion dollars be in need of this money?
Or is something else going on here?
Someone explain this to me..