Backpacking chair: my vote is yes.
When I started backpacking, it would have been sacrilege. ( any one remember Colin Fletcher?) Backpacking was a calculation, ounces x calories x miles. For me, the equation was not balancing out on both sides.
Yes, we are all different. We hike our own hike, within and without. I decided that “comfort “ was missing from the formula.
Now, I have a backpacking chair, a pillow, and some really great food. That is comfort to me.