Check out this peice of underwear worth $20,000

In 2002, South African goldsmith and jeweler Uwe Koetter created this $20,000 gold, pearl, and diamond encrusted chastity belt for a British client from Cape Town.
The chastity belt dates back to the Renaissance era, as a means to keep a lady faithful by putting her privates under lock and key. The original iron chastity belts were prone to problems, though: If the woman didn’t have the appropriate cloth padding between herself and the metal frame, she could fall victim to lead poisoning and, in some cases, death. 
This just makes me wonder why someone spent soo much money to have this made.