I was not aware of Para-Phernalia's 20-year life (which seems to check out based on quick research). I don't believe it's common knowledge. If I had known about it, I would not have bought mine. At age 67, saying I won't buy another one is probably not that threatening.
But I won't.
You can talk all you want about the per-year cost over 20 years, but it's still $2,000+. Knowing it's a wasting asset regardless of how well you care for it is discouraging.
Chip Bearden