If Fukashima has not occurred, we would be currently looking at a global uranium shortage in the next 5 years as existing major sources (re-purposing from old warheads) dry up and are not replaced with new mines.
Whenever production of power plants comes back on track, we will once again be facing such a shortage.
Yes there are limited reserves of uranium like everything else on the planet, but there is a lot more than 5 years... more like 200 according to this article. This is important because it buys us time to get technologies which are actually clean (looking at you, solar energy researchers) up to the speed of our current energy sources. Or find something else