I COULD, BUT,...
I could easily work nude, as I work out of my home as a Licensed Massage Therapist. I allow my clients to be nude and undraped if they wish to recieve their session that way, but I feel it is best for me to remain dressed as I don't wish to give an impression that anything goes, and besides, it is illegal for someone in this profession to do so. HOWEVER, when I provide massages at nudist/naturist resorts or gatherings, I will provide massages nude, since everybody else is nude anyway. In my experience so far, I have found that nudist/naturists are very body positive and are more receptive to giving/being massaged than most textiled folks, which makes it a pleasure for me to work on them and be worked on by them.
This stated, I wonder how many other folks are in an environment where they could work nude easily, but their situation is such that they must be clothed?