[honway]

The fly in the ointment is that you might need more energy than can be recovered from the fuel you make.

With math like that I am not surprised this approach appeals to you

Let me be more clear, since you seem to be having trouble with the concept here.

Garbage which would otherwise end up in a landfill goes in one end. More energy is produced in a useable form (oil and gas) than is consumed in the process. That is a good thing.

Is that simple enough for you, or would you like more help?

[boris]

"Is that simple enough for you, or would you like more help?"

I think it is you who need to look up the Second Law of Thermodynamics.

--Boris