This series debuted as a series that was a true attention grabber. Rowling's attention to detail and just the sheer amount of passion and love she poured into this series showed so much and in turn made the rest of us love it as well. It was first published in 1997, and this book was released in 2007.
After a span of 10 years put into this series, 10 years of buildup, 10 years of us reading about the Wizarding World this was the final chapter.
And boy did it deliver.
I tore through this and it was awesome. It completed the trend of growing seriousness and adult perspective as Harry was now a full adult. There are casualties, and the people we've all grown to know and love are not immune. When Rowling concentrates on a death, it's sad, and it hits deep inside you. The people who die aren't the ones who were old, or who had a lot of problems, many of those who die are young and have their whole lives ahead of them.
But the main aspect that this book follows through on is its constant devotion to one thing, one lesson that stands out the most and is the main theme of the whole series.
Without spoiling too much, Harry's actions, especially in the third act bring the actions of his parents full circle. He is very much the man his parents would've wanted.
The other characters who we have big questions about are answered for the most part. Snape especially. The way his character is played is absolutely brilliant. Dumbledore as well is skillfully deconstructed in his "old mentor who has all the answers and can do absolutely no wrong" role. He is even reconstructed towards the end (at least from the way this troper viewed it.)
This series is incredible. It was an enormous undertaking and in the end, neither Harry, nor Rowling let us down. This series is the modern day Lord of the Rings.
For my personal top 10 books I like right now Harry Potter ranks #3, only behind LOTR (as #1) and The Chronicles of Narnia (and I think it might even be as good as #2).
My current score for it 9-10/10.