I suspect it is a formality, designed more to be enforced in the case of high-risk tenants and I think it's extremely unlikely that the insurance company would ever want to see such reports...but you never know!
Your parents can inspect it themselves or appoint an agent to do it for them - it can be anyone. If there was an inventory when you moved in, they could just check the state of the building itself inc. fixtures and fittings, and ignore all the contents.
How is education supposed to make me feel smarter? Besides, every time I learn something new, it pushes some old stuff out of my brain. Remember when I took that home winemaking course, and I forgot how to drive? Homer Simpson