I did. I looked at the pros and cons, and couldn't justify the expense as the benefit to me is next to zero. Yes, I will get more accurate power numbers, but having the meter won't actually get me any fitter. I won't ride any more with a meter than I do without a meter so for the cost I can't see any benefit.
Same reason for not needing to replace the Pro yet - I could get a Neo, or a Kickr, but it won't get me any fitter or make me ride any longer. My 90 minutes of cycling will be as hard whatever the trainer I use.
Can't justify the spend to HID when there are more needy things to spend the money on to make her life easier. Hey ho, maybe some day eh?