Minecraft wiki entry for Weeping_and_twisting_vine_farming, associated text: Nether vines can be used to farm bonemeal and can be used to climb on up and down. Nether vines can also make a good aesthetic use for some builds and can be useful for hubs in the Nether, since there are no bubble elevators and nether vines are cheaper than ladders in most cases, and faster. Nether vines can be used to break your fall in the Nether if you have not acquired powder snow yet.