I don't begrudge money being spent on researching fusion. It is definitely a promising technology, but it's not coming to a power grid near you any time soon.
Even if we can figure out how to keep a reaction going with a useful energy surplus no one has any idea
a) How much a reactor will cost,
b) how long/hard will it be to build or
c) If there are any issues with the process - yes no nuclear fuel but there's still some nasty crap coming out of the reaction which you will have to deal with if you scale the technology.
Meanwhile there are a number of perfectly viable planet saving power sources - solar, wind, solar-thermal etc - already out there providing power.
Fusion is a nice idea, but it isn't the only way to save the world...
Even if we can figure out how to keep a reaction going with a useful energy surplus no one has any idea
a) How much a reactor will cost,
b) how long/hard will it be to build or
c) If there are any issues with the process - yes no nuclear fuel but there's still some nasty crap coming out of the reaction which you will have to deal with if you scale the technology.
Meanwhile there are a number of perfectly viable planet saving power sources - solar, wind, solar-thermal etc - already out there providing power.
Fusion is a nice idea, but it isn't the only way to save the world...