Is my friend a horrible person? Should I stay away from him?

I have a friend who is the ultimate stereotype of yuppie greed: rich, shallow, and addicted to sex, drugs, and conspicuous consumption. He tells me that all of his own friends look alike to him, to the point that he often confuses one for another, and they often confuse him for other people. When I am with him he takes delight in obsessively detailing virtually every single feature of his always designer clothes, workout routine, business cards, alcoholic drinks, as well as his elaborate high end stereo and home theater sound system. He is engaged to an equally rich, shallow woman. They can't stand each other, but they stay together for the sake of their social lives. He has a mistress on the side (the fiancee of a gay colleague whom he holds in great contempt and who makes repeated, hapless sexual advances towards him which is quite amusing) and has regular liaisons with prostitutes and women he encounters at clubs. The one woman (and possibly the one person) in his life he has anything approaching feelings for is his secretary. He just cannot bring himself to seduce her, perhaps because she is the only person in his life who is not completely shallow. Every time he mentions her to me he says "My secretary who is in love with me" and introduces her someone whom he "will probably end up married to someday".