Tell me all about how you think Naraku felt at the end. Remembering his wish, realising it was never really granted, that he'd lost his greatest desire along the way. :D
He had achieved all of his goals except for that. Becoming a full demon, killing Kikyo, and assembling the shards of the Shikon Jewel. Everything that Naraku wanted was his– and in the process he had destroyed the only part of that everything that truly mattered to his heart.
In the end, he had felt lost. Uncertain. He even tells everyone that had gathered within him that he’s not sure WHAT he’s going to do once he rids himself of them– and that’s because I think he genuinely had planned on wishing Kikyo to be with him once everyone was dead. There would be no more distractions to come between her and him, and finally Onigumo’s original wish for Kikyo to belong to him would be a reality.
I don’t think that he necessarily WANTED to die. But I don’t think he cared if he did, and to the end was still DEAD SET on taking as many lives with him. When he remarks ‘so this is how it feels to be at peace’ I think it’s with a bit of relief that he’s finally able to REST– and also sorrow in that his rest will be without Kikyo.