I do, and personally, I refuse to buy digital unless there's no other options available. Especially considering iTunes is no-where near the audio quality of a CD. I can go back to my CD and rip it again in better quality if I want to. If I buy iTunes, it's useless.
Add insult to injury, I recall the Chilli Peppers' bassist coming out against people downloading pirated copies of their (then) new album, bemoaning the sound quality of an MP3.
The band then expected people to buy (even lower quality than the pirated versions) iTunes, in order to access an exclusive pre-sale for their tour. Scumbags.