Whether or not you sleep well at night could depend on which view you hold over peak oil. Those who hold an optimistic view don't necessarily believe that oil production follows the curve predicted by M. King Hubbert. Instead, they believe that around 2030 oil production will begin the "undulating plateau" envisioned by CERA and continue indefinitely as other energy sources take up the slack. Like climate skeptics, critics of the peak oil theory feel that our outlook isn't so bleak.
To peak oil adherents, however, the future is dire. In fact, it may already be too late. We may have already reached peak oil production and are in the few-year period before it becomes painfully clear it has taken place. Others see the peak taking place as soon as 2011. Even the most conservative peak oil adherents don't place the peak any further out than 2040.