Sure, you can argue that nuclear (or whatever) is a better way to produce energy than most/all others currently known, but that's a very low bar to clear.

There are more and less sucky ways to produce energy, but let's be clear: all of them suck to some degree. There is no type of energy production where the mere act of producing that energy is a net positive.

Then the argument turns to whether or not the gains from proof of wasted energy-type systems outweigh the drawbacks of producing the required energy -- even if that energy is produced in the least sucky way. I'm firmly in the no camp.