@SnuffyTheSeal,
Some might be scary about new experiences, some have no opportunities or no occasions, in many cases are they working a lot and no time for changing s.thing.
Money can be an object. If one's doesn't feel missing s.thing , how to know gets exploration.
To go work makes usually . To had got through a terrible time or illness could be enough ambitions . Much are get knowledges by travelling around before start working for rest of life.
There are different causes.