There is emerging view that the aging is the reversible and bidirectional epigenetic/molecular/cellular process. Some reflections are in https://www.karger.com/Article/Abstract/477209 . There has been special issue of the
Trends in Molecular Medicine (TMC) about rejuvenation https://www.cell.com/trends/molecular-medicine/issue?pii=S1471-4914(15)X0009-8 and there has been a lot of work about expression of Yamanaka factors (Nobel prize has been awarded recently), about the full or partial cell reprogramming to the pluripotent and rejuvenated state. Last year the investment fund has been opened https://www.methuselahfund.com/ - some research aims for just rejuvenation, some - for important extension of life and still others are aiming so high as to avoid death completely.
Rejuvenation is natural process that is happening in each act of reproduction billions of years (and only now the science is starting to be capable of researching, controlling and employing this process), it is summarized in one of the articles of the mentioned TMC issue:
Because epigenetic dysregulation is a main driver of the aging process, it is logical to hypothesize that epigenetic reprogramming may be an effective strategy for manipulating the aging process. At the organismal level, sexual reproduction demonstrates the plasticity of aging. Indeed, during fertilization the chronological age of the two germ cells involved is reset to ‘zero’, resulting in the generation of an organism with a normal lifespan. Resetting the aging clock allows each generation to begin life fully rejuvenated, thereby preventing species extinction. Similarly, cloning experiments based on SCNT have used cells from old mice to create an animal with a normal lifespan, demonstrating once again the bidirectionality of the aging process.
My question is this - if someone refuses to advance the rejuvenation science and practice, or refuses to apply the rejuvenation to himself/herself (when it becomes available for the masses) - is this person effectively committing suicide? My question is about immortality as avoidance the death from the aging. Of course, some other causes can be unavoidable. My question is not about delaying the death in the narrow sense.