I recently got back from my 7th continent trip - a basecamp activity cruise to Antarctica. As one would anticipate, it truly was a trip of a lifetime and filled with unexpected adventures at every turn.
That's why you need to do it. Don't ask any questions; get in your car and go. You'll be surprised at what happens. You'll rediscover what it means to be alive. You'll crush any obstacles that stand in your way, and when you get back you'll be forever changed.