It basically means goodbye forever. If you say this to another individual, you are telling them, from now on, from this moment on, you couldn't care less what happens to them, as long as you never see, or hear from them again. You are banishing them from your circle of loved ones and friends, from your life. It is almost always justified/warranted.
"Don't worry about responding to this. I just wanted you to know how I felt. Have a nice life."
Have a good life means go fuck your self
Say you got in to a fight and that persons says have a good life it means never ever talk to them again and fuck you
Another way to say the word Farewell. Used when you just might never see the same person ever again.
Boy: I'm moving to New York for my job. So we might never get to see each other anymore.
Boy #2: It's been fun knowing you bro. "Have A Nice Life."
i know why you're here...
The Death of Marat (French: La Mort de Marat or Marat Assassiné) is a 1793 painting by Jacques-Louis David depicting the artist's friend and murdered French revolutionary leader, Jean-Paul Marat. Have a Nice Life!
(Idiom.) What is said to someone after ruining thier life or leaving them to ruin it themselves.
I got your wife, have a nice life!
A phrase memed all over the internet as a cringy gamer quote. It's also famous as a shirt design.
"I'm a gamer, not because I don't have a life but because I choose to have many" is one of many examples of how gamers are the worst thing to happen to gaming.
Who ever cared about your life? Oh wait, you don't even have a life!