I know what you mean. The only reason we started replacing ours (and that was just before I was downsized) was because we had a number of departments that still relied on fax. Apparently there were legal reasons that some contracts required fax copies rather than emailed copies -- I think that people could swear in court that the faxed copy was a true and valid copy but they wouldn't swear that an emailed copy hadn't been electronically altered. So the 8150s were replaced with different models that acted as printers, scanners, copiers, and fax machines. Basically beefed-up MFPs that were geared to use laser printers and could handle business-grade duty cycles. Don't know how long they lasted or how often they needed to be repaired/replaced.Those 8100's (and the 8150 that replaced it) were great printers. The energizer bunnies of printers, they just kept on going. We put millions of copies on ours, with nothing more than toner replacements and the routine maintenance kit every 350k copies.