Success There’s no such thing as a “successful life”, since every life ends up with death, thus, ultimately, being unsuccessful.
Nature Nature is like a blind painter: it keeps churning up species, without knowing which one will succeed. If it sticks, it sticks.
Immortality Which species are best adapted for life? Simple ones (hydra, immortal jellyfish), that last longest, in evolutionary time.
Junk Everything in Nature just accumulates (junk DNA). The older the species/individual, the more junk DNA it has. Nature is not good at garbage collection.
