I bought a new Bluetooth mouse the other day because my old wireless usb/radio mouse was dying. While I do have to admit I really wish it was a Bluetooth Mighty Mouse I really like the feel of it. I like the size of it and the fit in my hand. I also really like the glide action on it. Perhaps it's just because it's new, but it seems to be much smoother to me. Having this much focus on my mouse has also reminded me how nice it is not to be tethered by the wire. For years I've struggled with the cord on my mouse. I've always felt that it was tugging back at me or getting stuck under something else on my desk.
If you're not using a wireless mouse, you really are living in the stone ages.