bathroom thoughts

Why do people care so much about when/if/or how frequently someone takes a shit? Maybe it's not that they care about it but it seems to be something that everyone has an opinion about. For example: "Oh, you go every morning?" "You go twice a day?" "Some days you don't go?" "Oh, I go as soon as I wake up and right after my morning coffee." "I have a schedule." "I hate vacation, it throws off my whole schedule." "Let's not schedule that meeting for eight o'clock if you know what I mean." "You gotta go again? Jesus!" "Sometimes I go four times a day!"
But no one really seems to care either way about someone's pee schedule. People just pretty much go whenever they feel like it and no one gives them any shit about it.