Reasons Why People Travel Around the World

Visiting other countries will give you a mind expanding experience...

More seriously, travel can be truly educational and perspective widening. We all live on this big planet; but, we don't all live together; and, we don't all think alike. We have many things in common; but, there also are stark differences. Just from the human perspective alone, visiting other places and experiencing how others go about their day to day lives can provide

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  New lenses with which to see the same old human problems
  
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  Exposure to different cultures
  
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  Tastes of different cuisines
  
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  The opportunity to learn about another's history
  
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  Glimpses of a different artistic tradition
  
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  Natural wonders (not in all nations, of course)
  
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  Future business opportunities; many businesspersons became very wealthy by trading goods found in one country to customers in another, or a form of arbitrage
  

You also asked for disadvantages. Some people discover they really don't enjoy traveling. International travel forces the traveller into new and changed surroundings. Some people really do not like change. We all know individuals who are extremely flexible in the ways in which they engage with the world. And, we also know individuals who are extremely regimented and structured in their lives. They may secretly desire to experience the world; but, they may be very uncomfortable having to change their daily routines, if only for the duration of a short trip. If you are one whose day must proceed just so and if you find yourself lacking in adventure when it comes to eating new foods or seeing new places, international travel may be an unpleasant experience. You may find yourself judging the people you see and constantly comparing what you experience to your comfortable ways back home. Having said this, even the most flexible US traveller will relish the taste of an authentic American hamburger or hot dog after being away for some time--even if these aren't his or her favorite foods.