Yes.

No, but you can be Baker Acted for attempted suicide-at least in the US you can.

No U.S. state now considers suicide a crime. Helping someone complete suicide, however, is criminally punishable in several states.

If you want to find out what may happen if your suicide attempt fails, go to lifeaftersuicideattemptstories.blogspot.com

No, you get arrested for Attempted Suicide, but you don't go to jail. Last I heard you go to the psychiatric ward for 5 days of observation.

Most murder statutes specifically state that you must cause the death of "another person." However, if a state statute is not so specific, then it is certainly possibly (however, highly unlikely). Even though I haven't checked the statues in every state, I think it is safe for me to say no.

No, only for attempted suicide and then arrested. A mandatory psychological examination will follow. Committing or attempting to commit suicide is a law violation. This law is necessary, so the police can take this person into custody for mental evaluation.

1) I could only understand this if you have a Dissociative Identity Disorder. http://en.wikipedia.org/wiki/Split_personality Interestingly, if your suicide attempt does not fail, you cannot be arrested. (just joking) 2) No, you will be considered insane or depressive and could in some places get an mandatory treatment: "Modern medicine treats suicide as a mental health issue. Overwhelming or persistent suicidal thoughts are considered a medical emergency. Medical professionals advise that people who have expressed plans to kill themselves be encouraged to seek medical attention immediately. This is especially relevant if the means (weapons, drugs, or other methods) are available, or if the patient has crafted a detailed plan for executing the suicide. Medical personnel frequently receive special training to look for suicidal signs in patients. Individuals suffering from depression are considered a high-risk group for suicidal behavior. Suicide hotlines are widely available for people seeking help. However, the negative and often too clinical reception that many suicidal people receive after relating their feelings to health professionals (e.g. threats of institutionalization, increased dosages of medication, the social stigma) may cause patients to remain more guarded about their mental health history or suicidal urges and ideation. In the United States, individuals who express the intent to harm themselves are automatically determined to lack the present mental capacity to refuse treatment, and can be transported to the emergency department against their will. An emergency physician will determine whether inpatient care at a mental health care facility is warranted. This is sometimes referred to as being "committed". A court hearing may be held to determine the patient's competence." 3) No, but only if you are the only person concerned in the attempt. By collective / assisted suicide there could be an accusation of murder. "In the United States, suicide has never been punished as a crime nor penalized by property forfeiture or ignominious burial. Historically, various states listed the act as a felony, but all were reluctant to enforce it. By 1963, six states still considered attempted suicide a crime (North and South Dakota, Washington, New Jersey, Nevada, and Oklahoma that repealed its law in 1976). By the early 1990s only two US states still listed suicide as a crime, and these have since removed that classification. In some U.S. states, suicide is still considered an unwritten "common law crime," that is, a crime based on the law of old England as stated in Blackstone's Commentaries." "In many jurisdictions it is a crime to assist others, directly or indirectly, to take their own life, or, in some juristictions, to even encourage them to do so. Sometimes an exception applies for physician assisted suicide (PAS), under strict conditions; see Euthanasia." Source and further information: http://en.wikipedia.org/wiki/Legal_views_of_suicide

Suicide is illegal in most countries...

I think attempted suicide is the only illegal act that will get you arrested but not sent to jail