How about never refilling your tank for 25 years?

First I am going to pose a question, then, I am going to make a statement. Here goes: Is nuclear power good or bad? In this particular example, a new submarine for the British Royal Navy is powered by its very own nuclear reactor, and said nuclear reactor will power the machine for its entire expected 25-year lifespan. While the idea of never needing to refill a gas tank or recharge batteries sounds great, the question is whether nuclear power is a good option. Like I said earlier, this example is a submarine, but much of the world is powered by nuclear reactors, which generate steam from the immense heat generated therein. So, in a sense, some of the many electric cars that may hit the roads could be powered by a nuclear reactor. Is that good or bad?
Alright, now for a statement. It seems to me that a major stumbling block to fixing our environment is the cost associated with the clean-up process. I have noticed, as I am sure you have as well, that budget concerns seem to take a back seat when talking about military projects. I am not going to get into the debate on money spent for defense purposes, but I will say that we should consider the defense of our entire planet (oddly enough, against ourselves) as at least equally as important. But, sadly, I would have to say that we do not. Comments are welcome.

Related:

• Nuclear-fueled ethanol will cost only $1 a gallon to produce

[Source: Gizmag]