Energy from nuclear power plants is much more expensive than other forms of energy despite decades of intensive research. Also, we still don't have a practical way to safely store or dispose of the waste created from nuclear power plants. There's a reason the great majority of countries are scaling down their nuclear power plant programs.

While we do have a few decades of oil left, pursuing new drilling places isn't very wise. Prices are going to keep rising regardless of a few more million barrels of oil. I believe it's speculated that if we extracted ALL the oil left in our planet, it'd still only last us 60-80 years at current rates. Essentially, drilling for new oil spots is a waste of time because it diverts our attention away from new energy sources and doesn't do anything to help prices. We can't just magically find new drilling spots; there are a limited number, and they're running out.

Note: The only problem with natural gas is it's stored and transported in a liquid form that is highly combustible. It's much more dangerous than oil to transport. We do have over two centures worth of it, though, at current consumption rates.

Edit: The ignorance part, in case it wasn't clear, was in reference to the mistaken idea that many people have that we can magically find new drilling spots and there's this unlimited supply of oil. Also, people think nuclear power is some magical solution when it has just as many pros and cons as other energy sources in reality.