When my colleagues return their average PCs to me after 4-5 years of use, they are almost always in a worse state than when Macs of the same age are returned. The cases are damaged or worn, the screen might flicker, ports may be broken. Software means the PC "seems slow".
A PC costing as much as the Mac would fare better, but all Macs are high-quality hardware, and only a fraction of PCs. The average PC is discarded before the average Mac.
