I'm not rpping them yet, for this precise reason: I'd need a lot of drives for storage and backup. I was about to start my ripping project, actually, last year, but then I got a BlueRay and I gave up. Of course, I still have some shelf space for my collection, I estimate for few years to come, and that allows me to postpone.

But, I would definitely start ripping them now, just for the convenience of it, if it wasn't that storage space is still an issue.