My problem with this whole, "Adding more weight is asking for trouble." Theory going around is that I am 190 pounds, I once weighed 300+ pounds. I use to carry, everyday an extra 100+ pounds of fat on my body everyday. Why would it be silly to assume I could put on a pack weighing 80lbs and hoof it through the woods? I mean I use to hoof around 100 plus pounds of fat. There are people who weigh 400+ pounds, I think if they were to drop their weight down to high 100's low 200's that a 80lb pack would be nothing to them.
I mean correct me if I am wrong, and I know that body fat is being evenly distributed around the body, but 100 pounds is 100 pounds fat or bug out bag I fail to see how it could be any more worse then a 100lbs of fat.
Does "100 pounds of fat" sound like a good thing to you? Not saying you "can't", saying you shouldn't if you don't have to.
No I will agree that being 100 pounds over weight isn't good for you. It is unhealthy and will cause problems later on down the road. Fact when I lost that weight I felt so much better then before. However I was able to hike for hours on end through the woods weighing 300+ pounds, a 80lb pack back isn't going to/shouldn't slow me down that much, and with practice other people should be able to do it too.
I will admit though, I do have bad knees, whether it be from the fact I am tall with long ass legs (that's my brothers problem we are the same height he has never been as big as I was and he has bad knees) or the fact I carried all that weight around so long.