I'm not sure why people see Fusion as endless cheap power - it suffers the same problem as Fission stations - you need to build a hugely complex industrial facility to make use of it, the life of the station is limited and you need to pay it back. Fission is also practically endless given modern reactor design (i.e. designed to make power not bombs). Modern fission designs also don't create nearly so much waste, but still significant, of course. Fusion wins there. IMO though the fission/Fusion argument has been made less significant by advances in renewables. Solar especially. There is already a cheap limitless fusion power source in commercial use - the Sun. I think given current technology Fission or Fusion power stations should be an important part of the mix, when the wind doesn't blow or the sun doesn't shine. I think there is little enthusiasm to build them though because the investment is large, takes decades to return, and there's an expectation that battery storage solutions will advance faster than anything else - making the base load requirement redundant.