Personally I believe "deal breakers" change according to one's own maturity, wants, and needs, at any given time.
We are always refining our list based upon our past experiences and learning more about ourselves.
Right now I'd list the following: Lack of respect, Lack of honesty, trust, affection, passion, romance, sex, class, consideration. Cheating (emotional or physical), smoking, addictions, STDS, loud/rude, Financially irresponsible, immature, and not wanting the same things out of life as well as within the relationship. There is no Right or Wrong only Agree or Disagree.
Ultimately we are all looking for someone who wants what we want. Life is too short to be trying to change water into wine!