Interesting subject! Just a few years ago I started using my shower shot, and expelling in the shower. Since I don't live alone, I assumed that the odor would be the most offensive side of this playtime. ( Odors seemed to waft through our home anyway). So I began lighting incense outside the shower... this worked perfectly and offered me some privacy with this profligrity of mine!! lol! Initially, I wanted to shave, shit, shower, all at the same time, as a matter of efficiency in the morning before work. I hated using the toilet after I'd just finished my shower, but couldn't seem to get my gut awakened, first thing! (Hence the shower shot!)
I really had to self-talk myself into expelling in the shower... "Was expelling in the toilet only a societal thing??" I asked myself... "It certainly was the preferred public mode of expelling." ... "Because potty-training was one of the first things taught, when I was a kid... is that what expelling in a toilet was... just a result of potty-training?"
Once I could rationalize through these mind games, I became ok with seeing my feces plop to shower floor, and I could rinse them down the drain. (Clorox Clean-up remained handy for the multi-user shower hygiene)
After all, it was my feces, a remnant of some very good meals I'd devoured! My body was done with the stuff. And I could monitor how well my body was being hydrated... or not. Gee, all kinds of rationale just to play with my ass!!!
Needless to say, I love clean anal play!!!