nTimeLock

I have a few questions about the nTimeLock feature and am seeking some clarity. Specifically, if I use this feature correctly with SparrowWallet.com and set it to release BTC in a block 10 years from now, what are the potential risks that could prevent me from accessing the BTC, assuming I have the private key? I understand that protocol upgrades might pose a risk, but I'm assuming backward compatibility should allow access. Your insights on this topic would be greatly appreciated, as it doesn't seem to be widely discussed.

Thank you for your time.