I set up a few channels but never spent from them. The thought was to set up channels and forget about them for a few years. But migrating to new hardware was tricky. Importing seed wasn’t enough despite never spending.
Discussion
But why would you do that? What's the purpose of having 100% your-sided channels and not spending? To me it sounds like just putting some #bitcoin at risk :-)
If you run #CLN there are plenty of proper #backup solutions - on LND I guess you just have to copy everything during migration.
Just make sure to never start the old hardware again :D
Why? Transactions were essentially free back then. No funds at risk if node offline. Risk accumulates when someone sends you funds or routes through you.