So you propose turning every mountain valley into an environmentally destructive storage battery? If we are willing to do that, why not just invest more in hydr

So you propose turning every mountain valley into an environmentally destructive storage battery? If we are willing to do that, why not just invest more in hydro power, since one of the big limits is the public's low tolerance for the environmental damage it causes? If we are just ignoring that damage or ignoring the public, why not build out basic hydro and not 'pumped storage'?