Missed
"The last time I read on the subject, SSD's built from current chips were expected to last many decades based on about 100,000 P/E cycles for commercially produced NAND chips"
There's a difference between referring to a "chip" as a whole, and what the OP to your comment was referring to: the erase-endurance of a particular 2-bit NAND cell, which does have 3000-5000 erase cycles at 25nm. However, when you take the whole drive into account (say 120GB), with decent wear leveling algorithms and such, it would take many years to burn through those erase cycles even pushing 7GB/day of data writes. And, of course, if you're using an SSD to edit uncompressed video or the like, you likely are a numpty or have enough money to toss your SSD once a year.