You are forgetting they do own it and can do as they like with it! You dont have to like it. I own a lot of stuff too and I dont like people telling me what they think should be done with it.
I tell them, "I would rather have it &never use it, than Wish I had it & never be able to get it!"
Maybe when you talk to him next point out a quick list of what it needs and what That would cost nowadays.. and mention that a lot of shops dont work on them anymore..