The old fat one:
I have a family member who works in the energy industry...
Great for him. Millions of people work in the energy industry.
All the worldwild experts agree that the conventionnal oil has already or will soon decrease (so it will make oil more expensive), that's not even a debat. All government agencies, armies, experts in the most important country in the world already agree. Seems your family member is one train late. Is he a world recognize expert anyway? Because we all have familly member expert in everything you know... I am not one, but I can read what the real experts are telling us. If your family member is an expert in the field, it means he/she already has written something on the matter, do you have a link? It could be interesting after all.
When will it run out?
Nobody in this thread wrote we will run out of oil.
It has been said: conventional oil production is decreasing (or is about to), which automatically means oil more expensive, which affects aviation and its pretended future growth.
Not being able to admit it is pure denial.