Well, I have a cd writer, and a dvd writer. Why? the dvd drive sucks. Lol, it's soo slow for burning any norm cd. I want to break it sometimes. My cd writer which I had before the dvd writer worked fine, so I just kept it.
So yeah, in my case it was a matter of just wanting to burn norm cd's quick. I don't do cd to cd (one other main reason a sentense ago) is it's likely to fail, and I've got some spare hd space lying around, so that doesn't bother me.
Later-A-Much, and LONG LIVE THE D!