"But hey" dear Jillio, you know very little about me and your assumptions are generally wrong, so please stop the personal insults and attacks on me that you are so fond of. Perhaps it helps to ease some frustration or bitterness that makes you behave the way you do, but your viciousness and spite just harms the dialogue.
If a child is not exposed to ASL in his or her daily life, it cannot be considered his or her natural language simply by default because the child is deaf or HOH. Most deaf children born to hearing families in the US encounter ASL naturally in their lives about as much as they do Auslan, BSL, LIS, or Balinese, etc. A child's natural language is what develops spontaneously based on what is in use around the child, initially that used by parents and surrounding family, then in the surrounding community, and later, in school. Deaf children in the US aren't spontaneously acquiring LIS. They are also not spontaneously acquiring ASL without directed learning and immersion.
Whatever language a child is both immersed in and has access to is what develops as child's natural language. If a deaf child has access to speech sounds (via CIs/HAs) and is surrounded by a family and community using spoken language, this will be his natural language. If a deaf child is surrounded by family and community using ASL, this will be his natural language. A child without significant exposure to ASL as a primary means of communication around him won't develop that language spontaneously (naturally). My deaf child won't develop Chinese Sign Language spontaneously -- even though she's a card-carrying deaf Chinese -- because it's not in use around her.