I feel our 3 year plan keeps things fun & fresh. There is usually several big new attractions in that time so there is something new to explore. It's a perfect amount of time to truly miss it, too. It also helps with budgeting, of course, so we can splurge more when we go. And its a perfect time to plan since (like many here) I am a bit obsessive with planning. Although I sometimes fantasize about unexpectedly coming into extra cash and heading down sooner, I really do feel that this wouldn't be the best idea. I think fondness DOES make the heart grow fonder, and if we went more often it would loose some sparkle and magic and I'd be more critical. Going every 3 years, we're SO excited when a trip comes around again. It also works great for our kids, because every 3 years they enter a new "stage" - e.g. at 4 DD was really into the Princess stuff, and at 7 she was excited to go on the thrill rides she wasn't tall enough for the first time. Next trip it will be DS's turn for the thrill rides since he went at 1YO and 4YO, and wasn't tall enough for Space Mountain & Rock N Roller Coaster (and too scared for TOT). He'll be 7 next trip. And now we have a new baby girl to do the princess stuff with again (yay!). When we went in 2012, the new Fantasyland wasn't built yet, so we were excited about that in 2015. When we go back in 2018, Pandora will be open (and maybe Star Wars/Toy Story expansion? Or, maybe not...). Shows and parades are new, etc.