Philosophical thinking in the 19th and 20th century has led, in some cases, beyond thinking in terms of pro-choice, to the point that suicide is no longer a last resort, or even something that one must justify, but something that one must justify doing. Many forms of existentialist thinking essentially begin with the premise that life is objectively meaningless, and proceed to the question of why one should not just kill oneself; they then answer this question by suggesting that the individual has the power to give personal meaning to life.