WTF man, where did all this anger come from? Too much tequila? It tends to make some people angry.
This chart is cut and pasted from 2010 data presented by the US geological survey group of the top 17 oil producers in the world, the years representation is for the respective country at current usage rates per country and located in land the respective country owns. Add all these together, it is many decades of oil use...
Country Reserve life in years
Saudi Arabia 66
Iraq 142
Canada 188
Iran 95
Kuwait 110
Venezuela 100
United Arab Emirates 93
Russia 17
Kazakhstan 93
Libya 66
Nigeria 41
United States 8
China 11
Qatar 46
Algeria 15
Brazil 14
Mexico 9
For the total of these 17 nations for the world, it is a worst case scenario of 54 years. This is based on only a 50% successful recovery of the known contents. Generally, they are closer to 70-80% but for the reserves,they use a standard 50%.
This is also based on known oil fields, does not include prospective oil fields that have not been surveyed and quantified.
This is just the reserve fields, not being actively pumped. So we have a long while before gas goes away out of necessity.