They definately used to, my first on was a jvc xr2010 (scsi) 4x read and 2x write LOL (could have been 6x read, i forgets), but yes, not everyone wants a rewrite facility, but from a manuf point of view- its another feater to offer.....
tried my single 4x-10x ricoh cd that was supplied with my ricoh drive to back up all my utilites & drivers i have installed.
mmm went wonderfully.
i may not use the RW feature again... but its still nice to have. the opportunity to add stuff or erase and start again on a high quality cd is not to be sniffed at. good data security incase things go titsup.com.au. LOL
I'll respect your comments & opinions, even if i disagree with them, Provided you display maturity.