How common it is to practice it only solo??

I'm here stalking you guys, trying to get some tips on the psychological bias of this fetish... I'm definitely not into sadomasochism, nor other scat stuff, definitely! But sometimes I really love playing with my own shit, and my own only! It really turns me on licking it off a partner's cock, or making some mess while masturbating, but I've never fantasized eating someone else's shit.

Is this a step towards the "full experience" you all have already had, or is just a thing "normal people" do!???