I have no need for a high end PC, but I hate switching PCs and getting really high end ones in the past has served me well in getting very long useful lives from them.
I have first and third gen i7 desktops that still work really well and perfectly fast for most desktop tasks. They have added RAM and newer SSDs, but otherwise are stock $1500 gaming PCs from (if I remember right) 2009 and 2012.
The 2009 is now a media center, and the 2012 is in daily work use but ready to go out to pasture as light duty office server.
The most taxing tasks are doing OCR of 300 page scanned documents and light video editing.
