I'm not trying to argue that smoking isn't bad for you. Of course it is. That said, if you think you're telling smokers something they don't already know, that means that you either live under a rock or your head is so far up your own butt that it's sticking back out your throat, allowing you to masquerade as a normal person. Telling a competent adult smoker that they shouldn't smoke isn't helpful. It's judgmental and condescending.
No, I don't. When people say 'literally' before something that's not literal it's meant as an intensifier to add a dose of hyperbole to what they're saying. Saying 'figuratively' literally has the exact opposite effect. Also, I don't want to sound too judgmental here, but using 'figuratively' in that way sounds incredibly stupid, and anyone who does it should figuratively go jump off a cliff.
There is literally nothing more obnoxious than when someone you're talking to corrects your grammar. All those people on grammar's dick say it's to help get one's across point across more clearly, but that's what makes it so annoying when people feel the need to correct it. If they understand that when I say "My dog and me went for a walk," I really mean "My dog and I went for a walk" enough to tell me as such, doesn't that means my words served their purpose? What's the point of nitpicking? It's like, we get it, you're smart.
I think that most of us know by now that everything that tastes good is probably bad for you. When people choose to indulge in junk food over whatever tasteless piece of shit people are blending with kale and calling a health food these days, it's because they'd rather enjoy their lives than prolong them. Unless you want to be a douche who puts a damper on deliciousness, the only thing you should tell someone polishing off their second helping of chicken-fried cheese is the location of the nearest bathroom.
Not unless you have a time machine. Not only is providing advice on past events fruitless, but it's also pretty selfish as well. After all, the only time you would say this to someone is after something has gone badly for them, and if you're willing to pour salt in someone's wounds just so you can show the world that you always know what everyone should do always, that is scientific proof that you're overcompensating because you secretly have a small penis. (Yes, I'm applying that statement to both men and women.)