We just love camping and can't wait to see more of Oz, but also love the excitement of planning and then going on overseas trips too. Until you've done that first one, you can't imagine how many everyday "things" can be different in other countries, so the experience is such an eye opener and education.
We have 3 trips under our belt - 2001- coach tour of NZ for hubby's 50th, 2004-trip to US for my 50th to meet penfriend of 25 years. And this year in May, over to Canada - Vancouver/Whistler - to visit son and wife who are there on 12 month working holiday (seemed like a really good reason to go, don't you think??? haha)
JKohn has the right idea - frequent flyer points are definitely the way to go - 2 of our trips have been on points - certainly helps to keep the expense down!!
But as Bigjules said, it also gives you a renewed appreciation of how great it is here and how much space we have.
So it's great to visit other countries, but always great to come home again.