While Fusion is one of those techs that is always "20 years away", we have been getting exponentially closer to closing the gap between energy input and output:
Once fusion happens, life as we know it will be incredibly transformed into a realm of unbelievable abundance. We will literally be able to spend and spare not to solve any problem. Once sufficiently miniturized, Space Travel will be a breeze. Kiss heavy car batteries goodbye, the cars don't need fusion engines, they can run on electrified lines (which will be wicked easy to produce with unlimited energy).
Once fusion happens, life as we know it will be incredibly transformed into a realm of unbelievable abundance. We will literally be able to spend and spare not to solve any problem. Once sufficiently miniturized, Space Travel will be a breeze. Kiss heavy car batteries goodbye, the cars don't need fusion engines, they can run on electrified lines (which will be wicked easy to produce with unlimited energy).
So stay tuned, and stay hopeful!