What is the worst block and item in Minecraft?

Minecraft is full of blocks and items you can craft, mine, and use for your builds. But which is the worst one? There is always that one block that everyone hates because of its physics, texture, and how useful it is.  So you can comment what you think the worst block and/or item you think is the worst.      My personal choice is the cactus and the seeds.

block of emeralds 

That's good for a beacon.

The block that has caused me the most pain is definitely Crying Obsidian, because it has ruined so many otherwise completable ruined portals.

Worst item? I don't know. There are plenty of completely worthless items.

block? I would say regular snow blocks have no real use. as for items, theres too many useless ones

Snow golems

Coral block, drinkable harming potion.

I think the block tuff is useless its kinda too rare to be used as a building block plus it

isn't really a nice block anyways

dead coral is worst and drinkable damage potion

the dead bush. the dead bush.

tnt dupers would disagree with the first one, the second one can be made into splash damage potion

Sticks?

maybe the mundane potion is more useless than the dead bush

super low drops, better find a tree instead

From my experience, they drop 0-2 sticks, averaging about 1 per bush. This can actually save a few seconds in a speedrun.

yeah crying obsidian sucks

maybe the nether wart block

Steve

worst item: gold armor (in pvp)

worst block: i dunno

Worst item ? Arrow of poison 

Worst block ? Diorite 

Recently, the coal block has been retextured to look like the head of a creeper.