That is repeated often, but it's a factoid, not true. It is estimated that between 60% and 70% of OKW is still owned by the original purchasers, going strong after 30 years. Average might be over 20 years now and growing.That is true but it all depends on how long you plan on keeping your DVC timeshare what would be most cost effective. I couldn't find any "hard" data but have see 7 to 10 years in several post as the average holding time which wouldn't surprise me since that would fall into a time period where your children would be old enough to full enjoy the parks and end when other family expenses (college) start.