Jimdamedic said:
{The following is meant in the spirit of fun....Please don't take it too seriously

}
True. They are very different worlds. When you are on-property you get that feeling of being special for a few days...although the magic isn't "real" (BLAPHEMY, I know) you get the illusion. First thing in the morning, you answer the phone for your wake-up call and a familiar voice says "...Have a magical day!" Are you still dreaming? You peek at the view that is outside your window, and see that is good. Simply put, you are IN-side.
Near the end of the day, you look at the people drving away in their cars and you think, "Today, I just don't have to deal with traffic! Ahhhh!" (Which is a big deal if you live in a part of the country that has way too much of it all the time). You get to board a nice clean bus (unlike many busses in the real world) full of other Disney trekkers like yourself (not disgruntled people on their way to work, like in the real world) And for a moment, you believe in public transportation.
When you are re-entering the Magic Kingdom at 7pm, dressed in fresh, warm evening clothes, after the relaxing swim break and delectable dinner, you sigh while you watch the disheveled hordes departing for their off-site accomodations. You' re energized for those three magic hours, tantilized by the choices before you...Space Mountain? Big Thunder? Pirates? Dessert?
That's why you pay extra to be on-site. The two aren't equal. You can take a non-Disney reality filled vacation anywhere else in the world. At almost any city in the world, you can be with your family having cookouts on the grill, in a rental house. If you're going to do that, why not do it in the mountains? Or at the beach? There is only one WDW!
When you are off property you can more readily visit grungy, run-down, tacky tourist traps like Old Town (not 'Old' like Old West -old as in 'not renovated'), with all of its tacky, touristy trinkets (the best item we found there were those curly sprouting bamboo shoots at discount prices.) You can also visit the neon "Florida Souveneir" shops with their cheap t-shirts, crude bumber stickers, shell-ships, etc...
[Disclaimer: I do admit that off-site is better for the other big theme parks in Orlando, which are worth visiting. And there are some good restaurants in Orlando, and a cruise down I-Drive is exciting in its own way, but there are plenty of non-magical places too. I would still do a split stay, doing the offsite part first.]