import Control.Monad
foo = do
forever $ writeFile
"filename.foo" "Hello world!"
will that destroy those sectors of my SSD
after the rated 3000 write cycles?
Check your OS; while the firmware of modern SSD devices does much of the work of rotating blocks of Flash around to mitigate this, the OS can help by using a TRIM operation.
http://en.wikipedia.org/wiki/TRIM
I personally would consider that rapidly changing files should be kept somewhere else such as tmpfs with periodic snapshots to nonvolatile storage.