10-year-old solar panels are already deteriorating, and producing diminished output.
All these technological (digital) solutions are pissing in the wind; digital technology has lasted just 50 years so far, and people will discard it in an instant when something better comes along.
But think of all the websites! Yeah, OK. They're nearly all going to be gone in a decade or two.
Conserving bits has already proved to be difficult. How would you set about conserving an 8" floppy disk you found in your Dad's belongings when he died? Yeah, I know, you could probably source an antique 8" floppy drive. But 8" floppies only went obsolete in about 1985.
Internet archive? So you want to rely on a website to preserve your website? You have to be quite young, to be susceptible to the notion that the web will last.
As people up-thread have suggested, if you want your writings conserved, write something that the people of the future will spend effort to conserve. And forget about your descendants 500 years in the future; you have no reason to think your bloodline will survive. Wars have become progressively more destructive. And there's a slim chance that if your descendants do survive, they will know you're their ancestor anyway. I know about my ancestors back to 4 generations, beyond that I only know their names (and without supporting documentation).
People have spoken of using gravestones. Good luck with that. Gravestones as young as 50 years are being knocked down by councils because they are dangerous. And graveyards are full; they are being re-used, old monments removed and replaced with new ones. And have you ever tried to get detail off even a 200-year-old monument? Instead, since you're in the churchyard, go inside and read the parish register.
