I always try to lighten my pack, as it will allow me to go further, faster, and longer than I could before. I never thought 5 lbs would make a difference, but it really does in the scheme of things. Especially when my usual 1 way distance in is about 6-7 miles
Really the only pack weights that matter are your own and working on lightening or improving upon what goes into ones pack based on YOUR previous backpack weight for a similar trip. Comparing what a guy that goes into the desert for 10 days to hunt with to what a guy might need on a 10 day packraft float hunt in Alaska are two different animals, which is why I still keep a running spreadsheet of the gear and weight I pack up, but really don't send it out anymore as it doesn't do many people much good to see what I pack as much of it doesn't apply for their needs.