I understand completely.
When my mother died, I took over her cell phone account and kept her outgoing message.

I left it on for my dad and myself to call on occasion for about 3 years, but after awhile, people weren't leaving messages and I had to explain it so often and it was an odd story for them so I changed it, but it was very nice to hear for that time.

We fortunately have video of her, so it wasn't the only copy of her voice that remains.