>

While horse poop itself can be annoying and smelly and large, it's fundamentally different from dog poop. Dog poop is high in acid and protein and takes a long time to dissolve and return to the earth. Horse poop is basically composting plant matter and very good for the soil and enrichment of the ground.
So while I agree for some shared trails, it is more beneficial to the ground in the long run to leave around.
Makes me wonder how much horse shit you have to avoid >

The Amish love to leave it every where >

Didn't even think about that, good point. Too bad they'll never know...