Now that I am 70 I have lightened up the load, starting with the Big Three. I now carry a ULA pack which is a little over 2 pounds, down sleeping bag a little over 2 pounds, and a Mountainsmith tarp at 2 pounds. I have learned to count ounces and have saved a lot of weight. For short trips, 3 days or less people think I am going on a day trip. I do not carry things like binoculars, rake, saw, umbrella, notebook, axe or large knives.
...I use a small telescope binocular principally to scout out the campsites. I don't know how many times I paddled over to a site to reject it on closer inspection. The telescope saves me a lot of energy and time when coming to the end of the paddling day. Like "Pine" I use it to look closer to wildlife.