I'll try to make these ramblings of mine make sense.
Here's the summarization of my entire review: Promised Neverland was great, but the ending could've been better.

Story: 9/10
I would've given this a 10 but the ending was wack so I deducted a point for that. I agree with everyone when they say "the ending was rushed" and "they could've done so much better." The rushed ending is the only flaw this manga has. A supposedly dead character ends up being not dead and does something so easily that would realistically take a lot of effort and struggle to do. The last chapter was the only bad chapter in this entire manga. [spoilers for the ending ahead] I can't discuss the ending without spoiling it so here we go. Emma losing her memory and living in some unknown village with a grandpa for 2 years, was not needed. Even if they did that, they could have at least shown some more parts like the kids going to school, living normal lives, going to the mall, etc. After finding Emma, they could have at least shown her slowly regaining her memories, her fitting in with the others, her having a normal life [spoilers end here.] Anyway, enough about the ending, now for the plot. The plot of this manga is so unique, I don't think I've heard of a story with "children being raised in a farm to be eaten by monsters" as a plot. There were multiple scenes that made me cry. The deaths of characters, the reuniting of characters, etc.

Art: 9/10
The art is amazing, gorgeous, fantastic. It made me fall in love with so many characters. It has so much great character design. The emotions shown by the characters touched me on multiple levels. That time the girl in the dog cap/beanie thingy cried over Yuugo, her face in that panel made me cry too.

Characters: 8/10
The characters in this manga are well written, especially Ray. Ray was a spy, a double agent, he was willing to do whatever he could in order to protect Emma and Norman, well at first it was only Emma and Norman. Now, he would do whatever it takes in order to protect his family. Another well-written character is Phil. He was only 4 when he figured out the secret of Grace House. Learning that you're being raised on a farm so that they can feed your brain to monsters is a traumatizing thing. And yet, he didn't freak out. He didn't cry. He knew what he had to do, he needed to protect his younger brothers and sisters. He had to wait for Emma and the rest for 2 years. 2 years without anyone to lean on. 2 years without sharing the secret to anyone. For a child, that would be so painful, and yet he was able to do it. He is such a strong and well-written character.

Enjoyment: 10/10
While writing the art portion of this review, I decided to go back to a random chapter and look at the art. It was chapter 177. And of course, if you've finished the manga you know what goes down in chapter 177. While reading it again, all the emotions I had from my first time reading it came back. I cried my eyes out. This manga brought me so much joy, sadness, fear, anger. This made me go on a rollercoaster of emotions, that I would gladly ride it again.

Overall, this manga is a 9/10, it would be a 10 but i decided to deduct a point because of the rushed ending. This manga took me 3-4 days to finish reading, so i wouldn't call it an "easy binge" but, you really should read this manga and enjoy it for yourself while waiting for season 2 to air.