"El Bleacho" writes:

Interesting that no new life forms have been created since the
appearance of Man. And why aren't new life forms appearing all the
time out of inorganic material today? We have plenty of inorganic
material left on this planet.

The fundamental reason that abiogenesis only happens once is
pretty simple: there exist plenty of life-forms on this planet that
regard the building blocks of life as a meal, ready-to-eat.

Elf