http://www.universetoday.com/12800/titan-has-hundreds-of-times-more-liquid-hydrocarbons-than-earth/
Show what fossils existed on Titan.
I did not say that abiotic hydrocarbons don't exist. In fact, the Earth is theorized to have had an atmosphere similar to Titan's once upon a time.
None of that changes the fact that, on Earth, the vast majority of hydrocarbons we pump from the ground are abiotic. Theories stating otherwise have not been borne out by the science.