I wouldn't really sweat it. For Europeans there's hardly an excuse to not go foreign. I'm just 3 hours driving away from my neighbouring countries if traffic is somewhat sucky. Plus, we need it. If I want sun I have to go south. If I want to do some mountain-climbing I have to hit the Alps or Pyrenees as closest possible ranges. Real forests? Closes are in South Belgium or Germany. The closest thing we have to a desert is in central Spain and that's a 12 hour drive or something like that from Amsterdam.
America has all of it if you skip culture. And even that, each state has it's own culture. Granted, it's not a day and night difference between the Netherlands and Spain but still. If you want scenery or rest or just "something different" then there is no reason really to go outside the US. If you desire culture then yes, you should travel but only in conjunction with other things you want.
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Promoting Lesbianism --> 
