I personally try to minimise my impact as much as possible. There are caveats though nowadays.
Many moons ago, when I had to be very wary about leaving sign or having the EPA jump onto our heads from orbit about leaving human waste (let alone the damage from high explosive and small arms ammunition we used to expend) I was taught the most effective method for carrying out one's own waste.
For those moments in life when toilets of any description simply aren't available.
A roll of gladwrap and a collection of large zip lock bags were always carried. I still do nowadays.
Step 1: find a nice private spot with a nice view that won't be inadvertantly discovered by others
Step 2: place a bolt of gladwrap onto the ground
Step 3: squat over bolt of gladwrap, enjoy view, movements and normal thoughts during such a private moment.
Step 4: roll up gladwrap and double bag with ziplock bags. Stow in "special" pouch on outside of pack.
No muss, no fuss
