Developing a personal relationship with an AI is most definitely not beneficial nor therapeutic.
I think the movie Minority Report had a significant influence on UI/UX design. I think the movie Her may have a similar influence for UX design in AI and personal/voice assistants.
I read this study: Older adults’ intention to use voice assistants: Usability and emotional needs. The report was surprised that perceived companionship was such an important factor influencing older adults use of voice assistants (but not confirmed by other studies).
It seems voice assistants may be beneficial for older adults in dealing with loneliness. It will be interesting if more research will link voice assistants to improved health (physical or mental) outcomes. Or perhaps a study of emotional dependence on voice assistants. Facebook launched 20 years ago and it seems only in the past few years we started talking about the negative impact of social media (or at least legislation).


There is a difference based on your knowledge of what is at the other end.
that's not a functional difference when the ai and the ostensibly real person interact with you in the same way
There is a difference in your understanding of what is happening in the world as a whole. You are forgetting about the part that is not directly perceived by you but of which you have knowledge.