How bad does an ending have to be for you to dislike the whole anime?

[Star_Of_Hope]

So, what do you guys think about it?

I am sure you must come across very bad endings so far. So, what do you guys think?

 

[Blackangel]

if it's just worse then that would make me dislike that anime
and when i say worse, it doesn't mean some dragged out war like naruto. but i haven't come across such bad endings lol