True: Oil will not run out.
True: There are alternative fuel sources.
Also true:
The majority of the oil left in the world is going to be *much* more expensive to produce, refine and distribute. This is particularly true of deepwater finds - so much so that some of the major oil companies have ceased investing in exploration and are diversifying into non-energy businesses. Not enough profit.
The energy return from 1 barrel of oil in the 60s was 100 barrels of oil worth of energy. These days, 1 barrel produces 12 barrels. There is literally less bang for the buck in today's oil.
As so many people here will no doubt point out, we'll never "run out" of oil, but it will become an increasingly expensive energy source. We'll eventually switch more to natural gas, but natural gas fields deplete remarkably rapidly. Few are still producing after 5 years. Almost none after 10. We'll use it. We'll have to, but don't expect it to solve any problems.
The fundamental problem is that the world's transportation is still almost completely dependent on petroleum products and these products will become very expensive and/or unavailable far more quickly than we'll be able to adapt our infrastructure to use alternatives.
It's not the end of the world. It is probably the end of wealth for most people on the planet, and starvation for a rather large number as well as petroleum based fertilizers disappear and transportation of food over long distance becomes prohibitively expensive.
I would suggest you might review the opinions of that doomer organization, the US military (
http://www.guardian.co.uk/business/2010/apr/11/peak-oil-production-supply) for further details
By the way, I work in the oil industry. What do you do?.