My situation really has nothing to do with anything, but when I was shooting a lot of skeet I couldn't justify having big piles of wasp nest all over the loading bench!
In my hunting situations which was mostly pheasants, a small handful of cards and wads was all I needed in my vest pocket to hunt all day. I usually had to keep up with people using breech loaders so I didn't have much time to fool around with natural materials. I had to reload quick and keep up.
I can see the attraction to natural materials, but they never fit into what I was doing.