What's a bad ending

What's a bad ending

( this does not concern movies, or books or shows)
" if you do that! It's going to end bad!!"
An all too familiar sentence to hear if you are someone's subordinate. It usually a warning to keep you from doing something life threatening, which is bad(?)
But death is something so natural... And I remember being told that natural stuff is good. So I face a paradox, death is bad and good, but it can be both.
So what I figure is death is good, very good in fact, but the pain that comes with it is not.
And no matter how you die there's always pain may it be on self or on others, but there's always pain... So in all nature of death and pain, we forget rip and remind ourselves of the ripper because otherwise death would be too much of a temptation.