6 pounds...10 pounds....12 or 15 pounds...Everyone on this site carries a ridiculously light load, regardless of whether you're SUL, UL, LW, or whatever other monicker you want to identify with. But ultimately, what's the difference unless you're racing the clock or backpacking through your spreadsheets?
If adding weight makes you more comfortable, safer, or giggle quietly in your shelter at night, more power to you. Save running or trying to race the clock, I cannot think of any backpacking trip that I couldn't have done with an extra 5-10 pounds just as comfortably. If anything, the extra weight- maybe a few more creature comforts, might have made the trip easier in some ways.
There's something to be said for stoicism, the sufferfest, for getting close to the edge (wherever that may be for you), or pushing minimal gear to the limit. I get that. But I've never been turned back on a trip due to excessive pack weight. I've only been turned back on trips due to not having adequate gear, mostly because I was trying to push a philosophical boundary and travel very minimally, only to find that my limited gear selection and personal knowledge wasn't up to task- unless I was willing to embark on a real unplanned sufferfest. Sometimes these are great learning opportunities...sometimes these are real bummers that simply end trips.
I think too much nonsense is attached to this pack weight thing around here. I've been there. As if weight indicates skill level, ability, manliness, passion, or something else. As if guilt should be associated with adding weight back into a pack.
Once again I'm struck by good ol' John Muir. Of everything I've read by him, I'd be hard pressed to find a place where he talks about his gear. So maybe it's not about a 6 pound pack vs. a 20 pound pack- because that would still be using your gear as some sort of benchmark.