People already buy headstones that let the dead speak a pre-recorded message from the grave. It's a natural extension to put an AI trained with their thoughts behind it that can engage in actual conversation. That isn't for me, but I have gone to my father's grave to speak to him, and I can sympathize with the wish to have him speak back.

I am looking forward to conversing with prolific writers among the dead, from Hitchens to Lincoln to Aristotle.