Hey, no need to jump to conclusions here. For all we know his audio rack is made of gold ingots and his mattress is stuffed with $10,000 bills. If you're sitting on real wealth, who cares what your income is? Or maybe his wealthy mistress pays for his luxury condo, extravagant meals every night, the finest in health care, world travel AND an $18k annual stipend.
We all make our personal consumption decisions on the basis of our own private priorities and in the context of our own potentially complex (and completely PRIVATE) financial situations. I don't think any of us needs to justify his choices to anyone else.
On a purely personal level, I think he's living my dream! Who needs stinking food, shelter and medical coverage when you've got really good music? Seriously, when I moved recently, I looked at all of the stuff I had and wondered how much of it I really cared about. Certainly, little of it was actually needed. Some of it made life appreciably easier. But none of it made life better to the extent that the stereo does (except maybe my tempurpedic mattress). I wondered whether my life would be significantly worse if I sold the car and caught the bus to work, sold most of my books and started to use the library, bought my clothes at costco and never set foot in a mall again (a definite lifestyle improvement!), moved into a much smaller house etc. If not for the wife and kids, I think I could just about live with a whole lot of those compromises in order to have a wonderful sounding stereo.
By the way, I did a quick calculation and it seems that my current system has a MSRP of around $5000, but I probably paid $4000. Plus I have a headphone rig in the office which retails for around $1000, but I probably paid around $700.
Chad