Why don’t some ppl flush the toilet in public restrooms?

Omg the restrooms at my work are soooooooo disgusting. The building is really run down, but they're not putting any money into repairs because they are currently having a brand new facility built. So the restrooms are dim with stained wallpaper, cracked tile, broken faucets, and there is always 💩 in the toilets. I NEVER use those restrooms!!!!