I've enjoyed reading the posts on this topic and agree with most here that it comes down to creature comforts and what we feel like we want to have as "luxuries". Myself, I tend to go UL, with a total pack weight of 11.25 lbs, including 3 days food, that I took on a recent 3-day hike in the Ozark mountains of Arkansas in October. To me, I had all the comforts that I wanted. I was warm at night, well-fed, and had a great time. I carried a poncho, which I slept under the first night, had a tarp that I used the second night, because of a chance of rain, and even carried a 11-oz filter. Please do not take any of this the wrong way, I just thought I'd share one of my recent experiences.
Oz