Hi jafeica7
We are also both in our mid forties and have a son of 23. 3 years ago, we gave up our jobs, sold the house, bought a small cottage and upgraded the motorhome. We spent all of 2003 travelling, 8 months of that in Greece. Last year we 'only' made five 3 week trips ( Three back to Greece!). In three weeks time, we are off for a 4 month tour of the Balkans. From now on, we intend taking 3 or 4 months out every year. To finance this, I have taken an HGV licence and have found that there is plenty of work whenever you want it. My wife is a nurse, so again can get work as and when.
All I can say is that it the best thing we have ever done. OK, so our income is about a fifth of what it was, but when you get rid of the mortgage and other large outgoings, it's suprising how little you need. Anyway, our new lifestyle gives us far more pleasure that we have ever had.
Go for it if you can!!