"why use DNA over any other 4 distinct chemical structures that can be added to chains or lattices of molecules?" I think others were getting at this, but I fel

"why use DNA over any other 4 distinct chemical structures that can be added to chains or lattices of molecules?" I think others were getting at this, but I felt it could be made more explicit: base pairing. There is a way to copy the data that is baked into the characteristics of the molecule.