Why Do People Travel

I've got my first homework assignment for my class.
(p.s. I'm taking a class at City College! Don't tell anyone.)

"List 20+ reasons as to why people travel."

Sounds easy enough. The professor wants at least 20 reasons and she said that we could come up with 200+ if that's how we wanted to play...oh, and there's a contest to see who can come up with the most/best reasons.
Let's see, hmmm, ok, got it:

Business and Pleasure

That's only 2 and that's not gonna cut it. I've got to break those 2 categories down.

Business:

• Convention/Trade Show
  
• Meetings with Clients
  
• Educational or Career Development conferences
  
• Scouting/Searching for business locations
  
• Scouting/Interviewing potential employees
  
• Company Retreat
  
• Prize from employer (for ex. sales contest)
  
• Archeological Dig
  

Pleasure (includes all that is NOT Business...maybe "Personal" should be the category)

• Family reunion
  
• Family roots trip (Ireland, etc...)
  
• Religious pilgrimage
  
• Specific yearly event or festival (Running of the Bulls, Gilroy Garlic Festival, Day of the Dead in Mexico)
  
• Experience cultural shock (Hello Egypt!)
  
• Experience different cultures
  
• Visit archeological sites
  
• Saw it in the "1000 Places to Visit Before You Die" or similar type book.
  
• It's the "Hottest New Thing" in Conde Nast (or other travel magazine)
  
• Friends went there and said "you have to see..."
  
• Experience things that are not allowed in your country (Amsterdam)
  
• See sites from your favorite movie or movies (New Zealand now)
  
• See sites from you favorite book(s) (Jane Austin's England)
  
• Civil War Buffs need to see all things Civil War
  
• Re-Visit Battle sites from WW2/Korea/Vietnam
  
• Holocaust sites
  
• Competing the 50 State tour
  
• Acquiring as many passport stamps as possible
  
• To show children your childhood home.
  
• See sporting events
  
• Participate in sporting events
  
• Exercise
  
• Get away from work/home and clear the mind
  
• Take care of sick relatives
  
• Death of family member/friend
  
• Be with extended family on holidays
  
• Saw an exciting "Rick Steves" episode (or Samantha Brown, Rudy Maxa, Globe Trekker...)
  
• Frequent flier miles expiring
  
• To experience different foods.
  
• Visit a theme park.
  
• Visit Biblical sites
  
• To re-visit a place that holds special memories from a previous trip
  
• To follow the Grateful Dead
  
• To have a family bonding moment(s)
  

I'll stop there for now. I'll add more as they come to me.