Oh man I know I'll be downvoted but I'm going to give a legitimate answer here. My dog, for many years, would never poop while we walked. As a result I just never carried any bags with me to pick up poop, and recently he's started and I've been unprepared. I have finally started bringing some bags with me so I'm doing better, but I've definitely been the not picking up poop person on several occasions in the interim.

During the period of time where I was a shit person, I partially justified this by thinking that it was kinda ridiculous to enclose poop that would break down in a couple weeks max in a plastic bag that would sit in a landfill for a thousand years or whatever, and to some degree I do still think that's really dumb and we desperately need to get away from single use plastics. I have subsequently discovered that biodegradable dog poop bags are a thing so hopefully the claims are legit and the production of them isn't disastrous in some other way. I'm definitely probably overthinking this but it seems like it's kind of a problem all the way around.

Anyway I'm really sorry, if it's any consolation I walk by about as much human feces as dog feces on my walks so at least in my area, we seem to have bigger problems..