I bought a new XPS 8700 in July 2015. The computer still has the original hardware configuration that has been upgraded to Windows 10 Home and it still runs great. Presently, it is my wife's "every day" computer. 
How long have you kept an your system up & running? If you have kept it running longer than 5 years what do you use it for? To view older questions, please click here.  
DS: What is the longest you have kept an XPS Desktop?