Fusion power probably won't be soon, but I'm not ready to give up on it in the longer term.
I used to think of the waste issue as one of three big reasons to spurn nuclear power (the other two are risk of escaping radiation during an "event" and the danger of nuclear material s getting into hostile hands). I favored phasing out nuclear power. But you know, all of the risks with nuclear power are local risks. You could have a bad accident like Chernobyl, or piss off a community somewhere when we try to store the waste near them, or a city might blow up due to nuclear terrorism, and that's a rather large downside. But it's by far the cleanest source of power, exceeded by no competing energy source. The more we use nuclear, the less we'll mess up the climate.
Climate change is not a local risk. It's a global thing, and if we don't get it under control, we might no longer be worrying about anything at all.
I'm talking about NASA's methane clathrate scenario. If the global temperature rises plus 10 degrees centigrade, the clathrate deposits buried shallowly on the continental shelves could be warmed enough to bubble up into the atmosphere. Methane is a terrific greenhouse gas. Global warming will go nuts. Feedback loop. Nobody knows how far it might go; we could get boiling oceans.
So. Now I'm mildly in favor of increasing the use of nuclear fission as a power source for the next 50 years at least, or until we have nuclear fusion in hand. If we lose a few cities, it's better than wiping ourselves out entirely, or failing to produce the power we need to sustain our civilization.