Yes, I wasnt talking about bulk, but insulative powers, which he said was a poor choice. But let's also say every other animal on the planet from sheep to polar bears survive in all conditions all year round with natural fibres and have done for millennia, so how it's a poor insulator I don't know. Down is great as you've stated , but saying wool is a poor insulator completely isn't a fact, it's an opinion. And as I said its not the fact of what's best that I'm getting it but it's the repeated attacking of natural fibres (wool) , completely discounting them as an option when it isn't a fact and others like using natural fibres, which is appropriate as the OP stated he wasn't to keen on sleeping bags and would prefer a blanket.
I'm not arguing over which is best, (we all have out own opinions for different reasons), but its when people complete discount something just because they don't like it.