Into the darkness, chaos is accepted

Long Day's Journey Into the Night is basically a play that makes clear how addictions can destabilize a complete family, an objective analysis of O'Neill's own life captured in words as a search for self-explanations to understand his own former family. Every member of his family is included and represented by a character during a normal day in their lives. The addictions of each member has broken their connections as members of a same family unit.
We can notice that there is a truth related to the mother's addiction that is well-known by the other members of the family, but that is a topic that is hard to deal with, being this the biggest evidence of the chaos about the communication that a normal family is expected to have. This addiction acts as a an infection that affects to every member of the family producing, especially on their sons, more
addictions and a feeling of disconnection (or search of it) from reality. This situation is usually confronted by the father, but we can infer that he tries to channel his feelings of rage and worry through his sons, instead of his wife.
It seems to be that through this play, O'Neill tries to understand through daily routine the reasons of why his house is just a house and not a home, since a place full of omissions and addictions cannot be a secure place for a family.