That’s great to hear!
In general you could say that you’re not particularly missing out on something. However, you are missing out on support should you need it in the near future.
Furthermore I could argue that for security reasons it’s also better to update: RoPieee consists of a wide selection of software components that require a regular update as well. Although I must confess that the security implications for a RoPieee unit are rather small should something happen.
Anyways, enjoy your unit and keep in mind that a reflash will only take 10 minutes 
Thanks