I won't go into great detail about the endings, but the true ending I received in the final chapter was both appropriate and disappointing. (thatvideogameblog.com)
It doesn't go into any great detail on exactly what you're clearing out though, so you mostly just have to trust that it knows what it's doing. (androidcentral.com)
We've been over this, so we won't go into great detail how this benefits you. (choicemutual.com)