The Singularity Rising
I finished The Singularity in 2015.
The ending was solid in my not-so-humble opinion. At the end of the book, I said I didn't want to make the decision for anyone; I wanted them to think about what they would do.
That's a half-truth.
I did want the reader to decide Caesar's choice, but I also wasn't completely sure what Caeasar would do. I thought I knew, but I wasn't sure, and more--that choice would have far ranging impacts.
A little while ago, Caesar started speaking to me again. His story wasn't finished and the underlying question of free will still tugged at me. I know the answer that I wanted to give, but I needed to understand Caesar first.
So, with the answer finally figured out, I've begun The Singularity Rising. It's a three book series, around 200+ pages per book. I'm working on the third now, and I think the end is going to be powerful for anyone who read The Singularity.
It certainly will be for me.