First, I think that this question would do better under the Discussion board of eNotes. You will find that you will gain far more insight and perspectives there.
As for me, I fail to feel sympathy or pity for either Macbeth or Lady Macbeth. Both characters function as those whom I would place under the category as those who must lie in the beds they made for themselves.
Both characters decided to act as they did. Even though Macbeth was initially pushed by Lady Macbeth, his murderous behavior and mindset continued on past the murder of Duncan.
In the end, both characters simply go mad based upon the choices which each made. They both were in charge of their actions, their morality, and their ambition. Unfortunately, each made decisions which weighed heavily upon their conscious and led them down the path to their demise.