I am looking for a book series that upon completion will leave a feeling of emptiness, as if I'm saying goodbye to a good old friend, when you realize the good old days were left behind. It's a shitty feeling that only comes after something great, something that left a mark on you.
Stephen King's "Dark Tower" series.
That definitely left me with a feeling of emptiness... not so much because I was leaving behind friends, though.
Thanks for the recommendation! I'm aware of this series, but I never thought it would be the kind of read to cause the feeling I'm pursuing