Argument from poor design

The argument from poor design, also known as the dysteleological argument, is an argument against the assumption of the existence of a creator God, based on the reasoning that any omnipotent and omnibenevolent deity or deities would not create organisms with the perceived suboptimal designs that occur in nature. The argument is structured as a basic modus ponens: if "creation" contains many defects, then design appears an implausible theory for the origin of earthly existence.

Source: Wikipedia — Argument from poor design (CC BY-SA 4.0)