In the end, "is traveling outside of Disney for you" depends on your family's needs and wants. My family enjoys Disney, we have been numerous times but we also enjoy other things. We come to the WDW resorts 3 to 4 times a year but we only go to the parks 2 of those times. When will you be so close to Cape Canaveral again, it's worth a day trip IMO. Part of my vacation is taking the car out to the outlet malls, I don't get in much shopping while I work and schlep my kids around for their activities during my every day life. The term vacation means different things to peole but it should be about what every one enjoys in your family.
DVC put an end to those hectic commando days, so we can fill in with some delicious dinners at Timpano's Chop House and all of the other wonderful restaurants "in" the area and we can visit Universal/Islands of Adventure. (DS13) loves roller coasters. If you come to Disney once every 3 years then probably your perspective is different than mine and you want the 100% Disney Experience.
Contrary to some of the opinions on this post about traffic jams and getting lost in Orlando, I've travelled here to Disney/Orlando/WDW area for over 30 years and I recall only one bad traffic jam, 15 years ago. I bet that the car and traffic is often faster than waiting for those darn WDW buses.
If people are happy and content with ME,
DDP and Disney monopolizing your pocket 100% that's fine, if that's what your family enjoys and wants. As for me, Disney only gets a portion of my bucks because that's what suit my family!
Ie: Some people like to take the Europe in 7 days tour and never get off the bus, but I prefer to rent the car and drive around to see it all, even if I may get lost a little.
P.S. My son enjoyed Wonder Works when he was little, at 13 now he has no interest in it! It's worth a trip!