I'd love to see fusion reactors eventually, but no, we really don't need them now.
What we have is a huge nuclear waste problem from the light-water fission reactors. That is a primitive design that only uses 3% of the fuel and the waste is going to be hot for 300,000 years. Leaving that to posterity is wildly irresponsible.
Fortunately, we have a solution. Anybody with a high school diploma should know that the only thing that can be done with nuclear waste is to transmute it down to less radioactive elements. Fortunately we have the technology to do that: the fast breeder reactors. We can take 300,000 year waste and make it into waste that's going to be a problem for less than a few hundred years - we can build casks that can last that long (and English will still be understood at that time).
We have a moral imperative to do this, and the side effect of cleaning up the mess we've inherited is enough power for all conceivable power needs for humans for over a century. Plenty of time to get fusion reactors perfected (yes, they should still be worked on!).
We already have the technology but politicians killed it so that global warming could remain a political football (in the US). Fortunately Russia has continued to progress and they're helping China get online over the next decade. The successor to the current US system will eventually buy these reactors from China because we'll need them and the politicians cannot destroy everything for their own powerbase forever. It's a shame that the People complacently allow such potential to be squandered, but it's not for a lack of technical ability to solve these problems.
It is disappointing to see the fusion people constantly claim that they would have been done by now had their funding not been cut, and then be *so* wrong about their T&M budgets for the current big research project. Maybe the current generation in positions of authority don't have what it takes (and that can be OK since we have time).