If you ever want to tour with the bike, particularly away from support, or carrying a load, it would be good to use the original wheels.
And if you go out of town with the bike to a multi day event, I would definitely take the wheels as backup.
Hate to ruin a trip because you broke a spoke.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.