With the banking and borrowing provisions afforded to Disney Vacation Club members, realistically one could still justify membership even with trips taken every-other-year or even once every three years. Still with the variety of Disney experiences offered--not to mention frequent visitor perks like the Annual Pass discount--many DVC members appear to visit much more than once every 2 to 3 years.
Topic: How frequently do you tend to take vacations using your DVC points?