I get your point on hydrocarbons, but I don't buy in to the 'oil came from dinosaurs' mantra.
Your belief could be correct, but there are plenty that say otherwise.
I entered the petroleum industry 46 years ago as a petroleum engineer and was told by some why bother as we would run out of oil in 10 years.
Since that time, we have greatly increased both production and reserves worldwide. A limit as yet has not been found, which has greatly frustrated the naysayers.
Like the sun to keep warm and grow things, God gave us a gift of oil, gas and coal to provide for our energy needs. Packaged up in these resources we mine are dynamos of potential we can transport and using low footprints of extraction. Like a seed that grows from the earth into a plant so we could eat, these dynamos are perfect for our energy uses.
And we have just taken on the conventional resources in just a few places on this earth. Very little artic or the oceans. And most unconventionals are waiting. As are the ocean hydrates, even methane floating around the atmosphere we could extract like the windpower and solar guys are doing.
Just how we do we know there is a limit on the amount of hydrocarbons? It may not be a dinosaur thing but a self-generating mechanism within the earth.