On diminishing returns:
There's something to be said for every experience.
I remember my first tarp+bivy trip in the high Sierra. I got SLAMMED by a storm while camped at the treeline just below the north side of Forester Pass.
I'd be lying if I said I wasn't wishing for a bathtub floor and a full rainfly that night.
But that morning I woke to the most amazing silence, save for the occasional rumble of thunder from down the canyon, completely shrouded in fog. As I rolled over under my tarp, I caught a black bear about 300 yards away down the hill, tramping through the brush. For 20 minutes I watched it make its way in and out of the vegetation, sniffing around for food. It was one of the coolest mornings I've ever had.
It wouldn't have happened if I was cozy, zipped up in a tent.
Certainly there is a point of diminishing returns in regards to comfort, but I've also found that as one carries less, a deeper connection is often created. Like leaving the stove at home altogether. Are wood fires always as convenient as sparking a stove, especially in poor weather? No way, but then there's the magic of the campfire. A cushy inflatable pad and pillow allow you to sleep on anything...but you also miss out on the process and creativity of finding cool camps tucked in the bush and scraping together some litter to make your bed softer...
I've had a ton of experiences where less actually became more. There's something to be said for the aesthetics and connection that come with carrying a very minimal kit.
Comfort can often be traded for other rewards.