I dispute the claimed 30-year lifetime of current SSD technology. In a real life Windows 7 notebook, I managed to blow a Samsung 470 SSD into a pile of wear-leveled sand in slightly over two years (without swapping to it). Like that drive, Samsung's current offerings are rated based on 20 GB writes/day, and I highly doubt that they have some magic flash chips that they sell only to Apple and don't use in their own branded SSD drives that have a major lifetime upgrade.
With that said, the SSD drive went from "one bad block" to "forget about rescuing your saved data" in just a few days. Not like I'm upset or anything, since the drive failed the day that the new MBA was announced a few weeks ago and I have a nice, shiny new computer to start over on.
Having been through the failure, I want a meter that shows me the write statistics so that I know when I should be expecting my new MBA to start having issues. It would also be handy for people looking into buying used MBA's, so they know about how much SSD life a used computer has left in it.
So, back to the OP's question, is there such a utility on the MBA?????