For American's who have NEVER travelled abroad, why is that?

For Americans who have NEVER travelled abroad, why is that?
Don't have the money to travel
I don't have a passport/difficulty getting a passport/passport too expensive
I can't ever get enough time off work/can't afford to take that much time off work
I don't want to go alone/can't find someone/people to go with me
I'm too scared to travel abroad
I've never wanted to travel abroad
I legally can't leave/legally can't visit where I want to go
Select gender and age to cast your vote:
For American's who have NEVER travelled abroad, why is that?
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