At home I have an iMac and my wife has one. We come to the conclusion a while ago one desktop wasn't enough.
I have a 12" MacBook for personal and work on the go, when I'm on vacation, traveling, etc. I mainly just remote in to servers and computers to fix things.
I have a Mac Pro 6 Core at my office for work.
And all of the office workstations are Mac Mini's and a handful of hand-me-down iMacs. I used to build my own workstations at the office and after 5-6 years this became more and more, the older ones were showing their age and becoming less stable and becoming more work. I put in a 2010 Mac Mini back in 2010 as a workstation and 5 years later it was still running, 24/7 365. So I slowly started replacing the workstations with Mac Minis, when a workstation would require repair I'd put in a Mini.
We run primarily Windows, so I open a Mac Mini package and immediately format and install Windows10 Enterprise.
They are very small, I can either under-desk mount them or they can mount on the back of a monitor taking up also no space at all. They are very low-power and are great at being little workstations. If/when I ever upgrade them, their resell value is much greater than a PC equivalent also so a better return on them.
So I have about 30 Mac Mini's ranging from 2012/2014 models, 1 - 2010, 1 - 2011, 5 - iMacs 2009 - 2012 models, 3 PC Xeon servers and the MacPro at work.
We went from 3 employees, to 6 and now to almost 40.
2 - iMacs a 2015 (mine) and 2013 (wifes) 27" at home. 3 - MacBooks a 2012 12" retina (mine), 2013 Air (wifes travel), 2015 MacBook Pro 15" (wifes main laptop).
Everyone says I'm the Mac guy and have all the "toys", they don't see that my wife has twice as many devices as I do.
We own our business and it's growing pretty good at the moment, 2 locations with a third opening this year so we're fortunate to have that and the oppurtunities we have. We work hard, long hours and we like our technology.
Usually when we want to replace or put in place an iMac at work is when I'll upgrade my home iMac. So I get a new model, work buys my older model from me.
For folding though I only have that PC with the dual GPU's that I just built. My nephew occasionally runs FAH on his PC with an R9 380 and on the weekends I'll let the Mac Pro Fold.