The more you know.
Before there were toilets, there was "open defecation," which is exactly what it sounds like.
It generally made people sick and/or dead.
Source: scientificamerican.com
The first "toilets" were just giant holes in the ground.
Believe it or not, keeping poop in one isolated area kept soooo many people alive.
Source: toilet-guru.com
Eventually, someone realized funneling waste into rivers was healthier than having it stew in a giant pit.
Good for people. Bad for rivers.
Source: bathroom-designs-ideas.com
The first indoor toilets were used by royalty.
Though this was before plumbing was a thing, so waste dripped down the sides of castle walls into the poop-filled moat below.
Source: geograph.org.uk