1. No, I'm a postman.
2. The question here is ambiguous. You have not specified a unit of time for the number "12". I was still wetting the bed at 12 seconds, 12 minutes, 12 hours, 12 days, 12 weeks, and 12 months. However I was not wetting the bed at 12 years, 12 decades, 12 centuries, or 12 millenia. We will go by majority rule and say that I was wetting the bed at the age of 12 by a vote of 7 to 4.
3. I don't know what a "facination" is. (Maniac -1)
4. Again, your question is ambiguous and confusing. Allow me to explain. If the period is more than thirty days, it could be my whole life. But if I have killed three people in a period less than or equal to thirty days, I have also killed three people in a period more than thirty days, as the first period can be a subset of the second, longer period. The question, then, should be "Have you killed thirty people?", to which my answer is no. "Killed" is an active verb. While I may have not explictly "killed" them, I may have caused something else to kill them or though inaction allowed them to die.