Because it has been overused a lot.
Just @ them instead. Watch this.
@Titan_Candleburst I get what you are saying, but it isn't going to work for me. 1 if I only had 3 iron my iron pick wouldn't be breaking unless I was mining iron, gold, or diamonds. This would mean I was mining and already found a ton more iron (as I have done several times.) ,eaning I would just have to smelt it, then make another iron one. I don't use my diamond pick until I have at least mending and unbreaking III on it. So yes, I would make another iron pick. Also Iron is the worst looking block you could use if you were trying to make a white structure, yes there are places I would use it, but not a lot of it, and not often. Now that I think about it you can't even craft any iron blocks (for building) if you only have 3 iron.
@John_Otterblast, Yay! -fist bump-
@Titan_Candleburst See, its easy!