"I've personally come to feel cotton is vastly over-rated as a clothing material for anything but cost-saving goals (which certainly is an important factor.) Of course there's the old adage "Cotton Kills", referring to cold weather ..."

FWIW, cotton is very useful as an underlayer for firefighting.

It's very important to not have any synthetic fabrics as underlayers - especially in a wildland/forest fire situation where a flash of heat that might only result in a first degree burn of your skin melts the synthetic fabric to your skin.