It's been such a struggle to get anywhere near to making it do something useful.
But what if, one day, it actually works?
What could happen if we all had access to enormous amounts of very cheap energy? Have we thought even a little bit about all the bad things that might happen as a result?
Once upon a time, people thought nuclear fission energy would bring "power too cheap to meter". They did not realize all the associated costs.
If fusion ever comes, it will be expensive, even more than fission is now. It can still happen, if big gov and big corp put their money into it, but it's kind of unlikely. Solar plus fission is the more conservative (less risky) way to go.
Websearch Yucca Valley; do you want your aquifer to be downstream of that?