Fine tuning in cosmology refers to the idea that certain parameters of our universe must occur within stringent limits for the universe to be able to support life. Are lipid bilayers similarly fine tuned? This issues arises when we consider that lipid bilayers are much more complex than once thought, with with ~40,000 lipids identified to date; in silico predictions suggest there may be many more (>1,200,000). What do all these lipids do and is a precise balance of individual lipid species required for life and the emergence of life?