I worked the past year and a half at an agricultural college. Shits definitely still taught in school and there's an entire generation of farmers out there and coming up, it's not something we're gonna lose any time soon. (Also, OHGAWD Shadow is so right, current farming tech and technology is bonkers complicated, you have to be part scientist if you want to be even remotely sustainable, let alone profitable)
That said, I do think basic gardening/farming should be taught in like middle/high school, because the number of city kids that have ZERO idea what goes into growing and cultivating food is astonishing (though unsurprising, it's not like you're just going to pick that up in the middle of a city).
So, personal experience is a great teacher?
As an abstract every day bit of wisdom, yes. In that specific instance though, I was fully aware of the benefits of having an inverter, I'm just too poor to be able to afford one.