The fact that HP can't get a handle on their service/returns budget isn't their customers' fault. Having problems with things like after-market parts, 3rd party repairs, and home-spun modifications is not a problem unique to HP, or printers. If HP was more interested in reducing their service/RMA costs than forcing someone who owns a $55 printer to buy $40 ink refills, they would have developed an electronic tamper indicator rather than a kill switch.