Wait I thought that methane was caused by rotting vegetation, dino’s, organic matter????
Could it be that crude oil will just keep showing up no matter how hard we try to harvest it all?
In an environment like Titan without sufficient oxygen, methane, ethane and the like are the lowest energy states for the atoms of carbon and hydrogen. Ethane and the like will be the result depending upon the ratio of carbon to hydrogen.
It would be like surprised there was water and carbon dioxide on earth.