1) There are countries that simply cannot rely on hydropower. 2) I am Italian, so I will talk about Italy. The Italian plan to get to 100% renewable requires 7

1) There are countries that simply cannot rely on hydropower. 2) I am Italian, so I will talk about Italy. The Italian plan to get to 100% renewable requires 70x the current world production of lithium. 3) Rare earth mining for batteries, panels and wind turbines has a non-negligible impact. 4) You are implicitly stating that the cost of wind power is not that, but 3/4x higher, since you also need storage, and therefore it is much more expensive than nuclear the "real" cost. 5) You are talking about distributing storage over the electrical infrastructure. So you're talking about completely redoing existing grids. Other additional costs. In short, the reality of the facts is very different from saying "renewables are cheap."