I think everyone who wrote a review for this has already given enough praise, but I'd like to add my own alongside it.

I knew about the series for years, but I didn't start reading it until a couple of months ago. I sincerely regret that it took me so long to get into such a interesting story. The characters are constructed so well, the plot is consistent and original, and the world-building is something I've never experienced before.

It's something you can get lost in, and not stop reading for hours upon hours. Throughout the entire thing I've never been jarred out of the story (expect for any comedic relief, that is. I've always loved the humor portrayed in this manga; it's really refreshing and it always leaves you with a huge grin). Every character that is introduced has never felt unneeded or forced in any way. The plot makes you feel all sorts of things. But most importantly, as the series has ended, it's satisfying. I don't think there has ever been a series that has impressed me, satisfied me, or just kept me reading as much as this one has. I will definitely be returning to the wonderful world that is Fullmetal Alchemist again and again and again.