I feel like this depends mostly on the individual. Like how people have the option to choose the way they want their physical body treated after death. If someone chooses to have their mind archived, then that is their choice. Many people wpuld benefit from this throughout the grieving process, however, i do believe it would cause trouble as some people have a hard time coping and if it were a VR experience, you would have people that would not want to leave the experience as they would not be able to handle life wothout that person. It's an interesting thought though and really brings to mind that one episode of futurama where people had their minds uploaded to their experience of choice after death