If you want to do ass to mouth, do you HAVE to douche? I feel like douching is actually more harmful for the bowels, because you're messing with the natural flora in there, removing the natural protective coating of the intestine, and making the whole place more vulnerable to damage and infection. Plus, it's a PITA to do an enema every time you have anal, especially daily. I anally masturbate and I still never had shit appear on my toys (but I also don't masturbate if my stomach is not feeling good).
Isn't there a way to keep it clean down there otherwise? Maybe a better diet that's healthier for your body as well (which correlates with your cleanliness down there), and I feel like maybe even more frequent anal sex will help keep you clean down there as well thanks to the stimulation, eventual ability to control and know your body, and because your body gets used to anal.
Is there something I am missing or am I too optimistic about how clean our asses actually are?
If only small enemas are done using an enema bulb before anal play, there is nothing to worry about.
You can do it regularly without fear of disturbing the natural flora of your intestines.
In my opinion, smal douching makes anal play more comfortable, but I also understand that there are people who can do without it completely.
For deep penetration, however, a deep and proper cleaning is always a must.
As any bacteria in her rectum already exist within her digestive system, re-ingestion should not be a health issue. My wife has been performing ass to mouth almost every time we have anal for about a couple of years now with no issues. I highly recommend it. Not only is it an incredible experience for me, but my wife finds it a kinky turn-on that she's actually come to love doing. It heightens her arousal.
Once or twice a month, I will cum in her ass, then lay back, and she will put her head on my stomach and gently lick and suck my cock clean. If I was younger, I'd be hard as a rock again. I just require a little more refractory time these days. It sucks getting old.
Everyone's body is a little different though, so you'd have to experiment.