Because most plans for it still involve attaching a giant steam boiler to turn the heat it produces into electricity and that bit alone will cost more than renewable alternatives.
Call me ignorant, but I’d rather we focus on stuff like increasing photovoltaic cell efficiency (and possibly cost-efficiency) by the 40%-60% we’re leaving on the table keeping them fully loaded and cooking.
Simple physics upgrades, like rotating cones, or lines of panels to swap with each other in Arizona-parking-lot conditions, can take us further, faster, and cheaper.
Nuclear is only safe after and during spending a bunch of money to keep it that way.
That makes me uncomfortable, because we’ve never had more instability in my lifetime, as far as “wildly important things not being addressed”.
