Must have. As others have said, they help immensely with balance when climbing, descending and side-hilling in steep terrain and crossing water. Load carrying is night and day. Study's show there's like a 25%+ reduction in impact weight on your feet/ knees/ etc. (from memory, numbers probably off...). Left mine at home last year by accident. Ended up packing out a bull 9 miles and close to 2500' of vertical above the truck last year. Had to find a little aspen sapling to cut down every mile or so, and broke several of them in the process. They give you a good opportunity to rest and shift weight while packing. I use Black Diamond carbon Z-poles, super light and packable. Handles are slender, and it's easy to velcro them together and grab them both with one hand for extra rigidity. I do this a lot if I'm carrying my rifle in nasty terrain.