Johnny said: According to the Buddha, the only being who takes his/her own life blamelessly is an arahanth.
I think this is a common mis-conception. The relevant Sutta/s refer to a monk committing suicide and when other monks asks the Buddha what happened to him, the Buddha says that he attained arahanthship. This does mean that the monk was an arahanth before committing suicide.
The best explanation of this bu Waharaka Thero, is that the monk had a vipaka to repay which was by / to commit suicide. He would have attained arahanthship at the very last moment he was living, after he had actually done the act of cutting off his head. These are very minute time scales (citta viti), which may be hard to grasp for us.
Be that as it may, I cannot understand how / why, if taking one’s own life is an unwholesome act, how an arahanth is blameless in that action. This does not make sense. Also if it is blameless as interpreted by some, why didn’t all the other arahanths (or at least much more) commit suicide?
I feel that someone who commits suicide thinks that this life is no good and hence wants to end. There is some kind of aversion (dosa / dvesha) there. So, committing suicide cannot be something blameless, at least according to the Dhamma. That is how I see it.