Well, you can't install a nuclear reactor on board the plane, so I assume you don't dispute the usefulness of hydrogen as an energy carrier.Originally Posted by Ramil
So, I agree that fission can produce a lot of energy (as well as some radioactive waste). As to the safety of operation, we don't know yet whether or not the fusion plant will be safer to operate than the fission plant.
The fusion, however, is the ultimate source of power in the observable universe as we know it. And it produces many-folds more power than the fission. So, that's the inevitable direction of development as it will allow the humanity to exploit the resources of the Solar system and go beyond the Level I civilization.