Depending on where you live, legally speaking if you sold the carts you would have to delete the ROMs as well.
Personally I would just hold onto them. Plausible deniability aside, its nice to have them if the digital backup ever gets lost or accidentally deleted or corrupted.



Well, the R36S can technically run Dreamcast. Some Dreamcast games. At like, 50% resolution scale and with some frameskip probably. I was able to get it to run Phantasy Star Online pretty decently. But other games were unplayable.