So the urge for flying to the moon is a bug? Climb a Mountain?
The urge is a bug if it doesn't match the things you value. The urge is not a bug if it matches the things you value.
With some fat margin for uncertainty around 'matching the things you value' because that's hard to quantify.
Utility functions can have 'axiomatic values' in them. Not everything you value is deduced from underlying principles.
And see for yourself whether we humans have bugs.
So the urge for flying to the moon is a bug? Climb a Mountain?