I use the netherrack for street lamps/torches. Two or three fence posts and a block of netherrack. One post every five meters along the street. Just keep them a couple of blocks away from your house roofs of your village
Netherack can be turned into nether bricks and then nether stairs and fences
Incorrect. Netherbrick cannot be crafted; it must be obtained from nether fortresses.
But I disagree with OP that Netherwrack is useless. Does the whole "infinitely burning" thing not seem useful? I use them to make toggle-able nether portals, fireplaces, etc. I do think it needs more uses though.