I found this interesting, from Walter Isaacson's biography Steve Jobs:

"He had a great love for some material objects, especially those that were finely crafted, such as Porsche and Mercedes cars, Henckels knives, Bosendofer pianos and Bang & Olufsen audio equipment. Yet the houses he lived in, no matter how rich he became, tended not to be ostentatious and were furnished so simply they would have put a Shaker to shame. Neither then nor later would he travel with an entourage, keep a personal staff, or even have security protection."