...the molecules of oil are extremely complex. It takes energy to produce oil, to bind those together. It's not magic, man! You might as well say that farts are the most common molecules in the universe because they are made of carbons and hydrogen! In fact, fart molecules require way less carbons and hydrogens, so they should be way more abundant then oil molecules! If you were right, we would be living in a disgusting filthy farty smelly stinky planet, ...
I think you may have some errors and omissions here. First and easy one is air does not smell as it has lots of O2 in it that rapidly destroys farts. Now about your energy statements quickly: Probably true, but not necessarily so.
If the Hydrogen and Carbon atoms were not already bound up chemically say as H2O and CO2, then what you state about it taking energy to make oil molecules is false. The very fact that the H and C are bound in the molecule shows that. Also OilisMaster is correct on one thing:
There was a lot of both free H and C* in the universe initially - back when it was smaller and hotter, I suspect now that most of the H is found as H2 and I am too lazy to look up and compare the binding energy of molecular hydrogen to the typical C-H bond in oil - I bet the H2 bond is stronger as the electron which C steals from H only is in the n=2 shell, not the n = 1 shell near a proton as in H2 (Although technically there H2 molecule does not have any n=1 shell as that is an atomic atom idea only, but you surely get what I am trying to state.)
If H2 binding is stronger than C-H as I think highly probable for reasons just stated, AND if the oil molecule got its H for H2 then you are correct, even if free C atoms were available. Certainly, you are correct if the C is also bound as in CO2. I think there is essentially zero chance that there every was any place on Earth with both free C and free H, so for practical purposes you are correct in stating that Earth's oil did require energy to form from things like CO2 and H2.
This energy was thermal and found deep in the earth. I.e. some carbon compound and hydrogen compounds do exist in which these atoms are less tightly bound than in the C-H bonds of oil. At the depth where temperatures are high enough to break these bonds, then free H and free C will briefly exist from this thermal decomposition and form C-H bonds which are stable at that temperature as the C-H bond is stronger. If however the oil so formed is transported by subduction deeper into hotter regions some of the weaker bonds in the oil molecule (that would be the C-C bonds where none of the shared electrons is near any positive nuclear charge) will break before the weaker C-H bonds do. Thus oil will decompose into more stable hydrocarbons with no C-C bonds, such as CH4 and as here there is a higher ratio of H to C than in the oil, there will also be formed quite a lot of carbonate compounds (I can not tell which as I am a physicist, not a chemist. – I can only tell these binding energy and atomic and molecular structure facts.
Now unrelated to your post, a clarification:
Although, I have spoken of dead algae etc being transported down in subduction zones, this would normally take the newly formed oil down deep enough to decompose it. The oil we have today is not found where the crustal rocks dived down deep into the Earth. E.g. in the Andes Mountain region where the Pacific plate dove down making the lighter crustal rocks very thick so that they stick up or "float" high, like wood on water (or any lighter material on a denser one) but you sure do find the decomposed oil - now natural gas there. It is the basis for Bolivia's economy and found all along most of Earth's high mountain chains. - In the US the Appalachian and Rocky Mountain chain states all have natural gas, often in commercial amounts.
The oil had to be taken down deep enough to form (by the thermal energy input) but not too deep. This typically was the deep cold, oxygen free bed of an ancient ocean that just keep sinking and yet not getting much deeper as material was continuously filling it in as it sunk. For example the oil recently found by PetroBras under the salt layer (an old ocean deposit). I do not know, but would not be surprised if there is also oil under the Bonneville salt flat region which was also an old ocean bed, I think, but perhaps it never got deep enough to break weak C and H bonds to other elements and re-form the stronger C-H bonds of oil. Perhaps that region was never an ocean, just a great inland lake? I have read that Texas/ Oklahoma region was once connected ocean - don't know if it was just then a much larger Gulf of Mexico or what - this is not my field.
Where is the Bonneville salt flat anyway? Is there any fossil fuel there?
*The C was available only after the first big stars died. As they exploded, probably some CH4 did form in the cooling nebulae. I do not know, but bet it has been observed by astronomers by its spectral line emissions (In the IR probably.).