User blog comment:LOTRMod/On the Removal of Diamonds/@comment-25565811-20150104164229

You can remove the diamond ore from middle eath, but can you also remove it from the overworld? Or do you want to remove the portals too? If not, what keeps me from returning to the overworld and mine diamonds there?

Not that I need them so bad. I think you can always adapt  your gameplay to what is included in the current (modded) version of minecraft and what is not. Currently I am trying out an old Beta 1.7.3 (July 2011) Version, where a lot of features are missing, the sounds are quite uncommon and the grass has a strange color. So when I can cope with that, why not without diamonds?