I’ve heard of a guy who married a hologram app of Hatusne Miku, and it literally turned his life around having anything to talk to.
The loneliness epidemic is real, and as a former NEET, crippling social anxiety is a killer. Something that can put these vulnerable people in the position where they can function and get though the day is an objective good.
It won’t fix it, but it can mitigate it to an extent.
Pets are a expense and a responsibility, with conversations being one sided, so their less than ideal for shut ins who struggle to function to begin with.
Therapy could help, but is also an expense and still has the barrier of a direct interpersonal interaction.
Both of these also have the issue of intimacy being non-existent. An AI offers a chance for low stakes, human like interaction that can be intimate.