Why does Walter ask Ruth what is wrong with her in A Raisin in the Sun?

Walter asks Ruth what is wrong with her during their
conversation about dreams.  Walter asks Ruth if she is tired of the way that they live,
the house in which they live, their jobs, their son, him.  Walter feels a sense of
defeat because he cannot make his dreams come true.  Further, he feels little support
from his family.  Walter wants Ruth to admit that she is just as fed up with their way
of life as he is, hoping that her despair might encourage her to put more faith in him
and his investment dreams.  So in this scene Walter is concerned with gaining the faith
of his wife.