I don't disagree with any of that, but of course the sword swings both ways.
$10K? You sure? I think it's usually around double that, but maybe depends on where you're at. I have an off-grid solar panel I use for ventilation of my lung room, and clone lights. Cost around $500 the the 200w panel, charge controller, and two 12v marine batteries. I know I'm not making my money back on the investment, but I like to tinker, and like the fact that I have a bit of backup power when the apocalypses come.