Yes. And thirty years ago the same people said homosexuals were mentally ill.
In fact, coprophilia occurs naturally among some percentage of humans, same as we have queers, sadists, masochists, transvestities, people of colour, albinos, foot fetishists, and so on, until you reach you reach the set of… men and women.
Why it occurs is another question. Historically our first reaction to anything different is to call it crazy. Succumb not to that pat little solution. God or evolutions is not pat. Patties are a human invention.
Diseases? Yes, under the right circumstances. All sex is risky, there is no safe sex. It’s a matter of degree. Real scientific statements are impossible to make, since nobody has done the studies. Debates rage among fecophiles over transmission of various sexual diseases via shit. You got the bugs right though. Good for you.
Ask any enlightened doctor about eating your own shit. It just came out of you. It may not have much nutritional value, but it cannot have anything that wasn’t already there in the first place. Zero risk.
Because of the social taboo (which is precisely the turnon for many), you don’t get a lot of people standing up to shout about about it. But a quick cruise on the internet will reveal it’s at least as common as cross-dressing.
All in all a good answer, for the uninitiated!
To learn more about shitlovers (well, queer ones anyway), visit www.manscat.com and cruise the forums.
And take it from a coprophile… contrary to popular Zen, shit does not just happen. Thanks for a making a little bit happen here.