Yea, downloading 4 to 8 gig at a time isn't the thing it used to be. But uploading that from remote locations is for the birds. Burning it and sending via FedEx is faster! I use it for my work guys, it's just how it's done. One day memory sticks might get cheap enough to use like optical media, but by then it'll be obsolete too!
We've switched exclusively to thumb drives for all our client deliveries. Too few have optical drives anymore and working with USB drives is a lot faster for us.
While they aren't as cheap as CD/DVDs, there are a lot of advantage to USB drives, especially if you get them back to reuse.