A friend of mine that committed suicide a few months back had attempted to purchase a handgun, and was denied by NICS. She then asked me to purchase a handgun for here, and I told her that it would be illegal for me to, for a number of reasons. Firstly, straw-purchases are illegal. Second, I know that she was denied purchasing a firearm for some reason, by NICS. Third, I was fully aware of her mental instability, cared for her very much, and felt that she would end her life with the handgun I helped her get.
She ended up committing suicide with prescription medications (OD on insulin). My point is, I think these things should be reported. NO, it does not stop mentally ill people from carrying out suicide or crimes, but it helps IMO. I think what helps the most are people around the person who is mentally ill, and supporting the person, and not enabling them. At the end of the day they are going to do what they do, I just do not want myself nor the government enabling people who are emotionally ill.