The problem with oil in my opinion is that even if it will only run out in 50 to 100 years, new sources may be on hostile or at least "foreign" ground which makes you depending on others when it's running low on or rather under your own soil, while renewable energies usually are present everywhere.

Nuclear energy still has the problem of ultimate waste disposal and high costs for maintenance and safety. Just imagine terrorists crashing a plane into a nuclear power plant in Luxembourg. Central Europe would turn into hell.

Yet we still have to do research to improve efficiency and production of wind, solar and tidal power plants.