What Is It With...

You see and run across these people everyday, well not every but. They are rude, mean nasty, disrespectful and just plain hateful. The Only thing I have ever concluded is that they are SO miserable in their own skins, they are on a mission to make sure everyone else is in misery to. A cry for help? Has the hate, finally consumed all of who they are and were? Now, I can get a bit Snarkey myself, and have been known to chew a few hiney's off in my day but man! How long can you try and be 'nice and understanding' of a person's ummm how do I say, lack of respect even for themselves? Totally at a loss here, guess my feelings are hurt a bit as I KNOW I have NEVER done anything negative to or towards this person in any way shape or form. Do I cut the ties totaly after telling them to stop it and it's time for them to start 'flying right'? Do I continue the daily abuse? (Sorry it is what it is getting to feel like more and more with each passing day.) I try so very hard to not let people have that power over me. If I let them intrude on my inner peace, well, I guess I have no one but myself to blame.