Thanatos, son of Nyx and Erebos, twin brother of Hypnos (sleep), is a figure from the Greek, especially Spartan myths. Being the personification of death he has never been very popular because he is also in ancient times poorly written and hated by the gods of the Greek Pantheon, Mount Olympus. In the god of the underworld, Hades, he must acknowledge his superior and unsurpassable competitor. His mother Nyx, the primal goddess of the night, had even the deep respect of the chief god of Greek mythology, Zeus. However, she too is not really honored in the many temples of ancient Greece. Thanatos' father was, according to some, Erebos, just like Nyx was born in Chaos. In any case, Nyx had a large offspring on her own, including: the guilt, the imminent disaster, the dreams, the revenge (Nemesis), the deception, the friendship and the old age. And so Thanatos. That's not nothing.
Chaos is nothing, that which the first gods prevent from. Chaos is a bottomless void in which everything falls inexhaustible, in all directions. Thanatos, death is his grandchild. What else can we tell about death, especially Thanatos? The word euthanasia comes from it, like Thanatophobia, a fear of death, especially to die and a fear of issues related to it. Death is seen by many as the total end, an unexperienceable nothing. A phobia means as much as the fear is not real and affects the daily life of the person suffering from it very much. So much so that panic arises when someone is in a cemetery related to a funeral, for example. The opposite is possible.
You also have people who long for death and see it as redemption from their suffering. Forever in deep sleep. This could be euthanasia in horrible physical suffering to call something. Sigmund Freud is often associated with the term death wish. When you type in the word death wish in your browser, you will immediately see a phone number to call to talk to someone about it. Many links below are about depression and yearning for an end. There is a distinction between a passive and an active death wish, which can lead to a recurring death wish also called suicidality. Just in case you recognize the phone number you can call: 0800-0113.
At Freud, death drive or thanatos is a pursuit of a stressless state. It is also a part of what the unconscious controls, in addition to the urge to live, eros, the primary urge to preserve and preserve the species. The desire to satisfy our needs, which cannot always succeed. Eventually, in the extreme, this is the cause of thanatos. The two urges are part of what Freud calls the Es, which is contrary to conscience, also called Über-ich baptized by Freud. In addition to thanatos and eros there is the libido, which his apprentice and later counterpart Carl Gustaf Jung understands much more widely as being all-embracing life energy with a tendency to both destructive and creative urges and a conscious or unconscious pursuit of individualization which means self-realization in the broadest sense of the word. Choosing the fullness of life.

