Cows are worse than you think:
It’s all there in your mouth anyway. May as well swallow it.
I swish my mouth with water very frequently, after a snack, meal, taste of something, coffee. What’s the difference between just passing it from front to back and swallowing vs. a couple side-to-side swishes and then swallowing? Not much. Whatever’s in there getting swished is already inside my body. It’s grosser to spit, especially if I’m not at home.
Are you gargling around them? If so, THAT’S nasty. If you’re not gargling around them, why do they know what you’ve done?
And, aside from gargling vs. just swigging the beverage, there’s zero difference. If you took a sip and it rinsed stuff from your mouth at the same time, you’d swallow, right?
The above all assumes you’re talking about ordinary beverages. If you’re drinking Listerine, then all bets are off.
Depends. If I’m specifically trying to dislodge some food in my teeth, I’ll swallow the water. If I just need to rinse out some nastiness, I spit.