Our (well, H's) original paln was to do a week long trip every 2 years, while taking other vacations between Disney trips. We always vacation in Nov because we live in New Jersey and "Jersey Week" IS a real thing

Not everyone does Disney, but almost every family we know goes SOMEWHERE during that week.
So, we did Disney in Nov 2012, then Beaches Negril Nov 2013, and the plan was Disney Nov 2014. Turns out we love all inclusives in the Caribbean just as much as Disney

so we booked a bounce back type deal at Beaches for Nov 2014 (it was too good to pass up!), which pushes our next big Disney trip back to 2015.
To make up for it we took a 4 day trip last month, and H said we can take another 4 day next December. We LOVE Disney in December. The crowds, weather &
MVMCP make Disney ever MORE magical!
It looks like Disney will be a yearly trip for us, but most years the trip will be short, and our long stays will be 3 years apart. The short trips satisfy my Disney itch and give me a lot to look forward to on our longer visits.