1
Those who take their own lives, especially when the quality of those lives is much less bad than those of the cancer patient or the concentration camp prisoner, fly in the face of the normal will to live. They are seen as abnormal, not merely in the statistical sense of being unusual, but of being defective, either morally or psychologically.David Benatar
2
Although they will miss his presence if he dies, his condition is too burdensome to require his continued presence. In such circumstances, what is selfish is the insistence that the prospective suicide remain alive, not that he seek his own demise. The argument about selfishness can backfire in another way. Just as it is sometimes the case that those who kill themselves have accorded insufficient weight to the interests of others, so it is sometimes the case that those who do not kill themselves make this error. Consistent with what I have already said, I do not think that the interests of others are decisive. Nevertheless, there are situations in which a person's interest in continued life is negligible, because he will die soon anyway, and the quality of his life is appalling. If seeing out his days, rather than taking his own life earlier, would spell financial ruin for his family (because of the costs of his medical care), then it may well be unduly selfish not to take one's own life. .David Benatar
3
Discussions about the ethics of suicide are immediately biased by the verb that customarily attaches to it in English. One "commits" suicide. Because this presupposes the wrongfulness of the suicide, I avoid that verb, opting instead for "carry out" suicide. This is evaluatively neutral, avoiding both the usual bias against suicide and the unusual bias in favor of it that the verb "achieve" would effect. "Carry out" is preferable to "practice", which implies something ongoing. Finally, "carry out" also implies a suicide that is completed rather than merely attempted.David Benatar