Hardly Ever...
...I carefully measure detergent (original Oxydol), and I very seldom use chlorine bleach since my partner died; it's not needed for its disinfecting abilities these days. OxiClean is pretty much sufficient now.
I have some skin sensitivity issues, but they're not centered around laundry products, and maybe that has something to do with my perception that I don't need a double rinse. I tend to trust good appliances to do their thing; I've never felt a need to micro-manage them the way my partner did. Now, there was a double rinser!
Me, I like a nice clean machine with a decent set of features, then I like to measure the products I'm using, then I want to set the cycle and walk away, blessing the sound of the machine doing the work while I do something else.