Well my current 2009 24" iMac is ruining me for life when I'm editing video in FCPX. Slow is the operative word! Well maybe "very slow"...The only problem I see is that the 5K screen could ruin you for life.. I'd assume that after using it for a while anything else will look pretty bad..
1st world problems sure, but it would be hard to go back from the 5K screen..
