I am not confused at all. I know that parking is included with the AP, but we prefer to stay on site, it is much more convenient for us. We drive down so we have our van, but we are on vacation and prefer to park and ride resort transportation, especially since I have to use an ECV. Before my mom passed, it was so much easier to get an accessible room on site for her and she loved staying on site (so glad I was able to make that possible) and it just never entered my mind to stay offsite, until I looked into it one time and we decided against it and won't do it. We love the ease of the dining plan and we love the Disney food ALOT.
I think you misunderstood my comment where I highlighted what you said about "and by the time you add in parking, I don't see the savings" and then later saying you were an AP holder. It makes no sense to talk about not seeing savings when you add in parking - when as an AP holder you don't pay for parking. I wasn't referring to your preference to stay on-property. For AP holders, the cost of parking is irrelevant, so the savings are very real when you compare the cost of hotels. As an AP holder, when I pay $25+tax a night, that's what I really pay, with no additional costs to offset those savings.
I completely agree that if you enjoy the benefits of staying on-property and you can afford it, then it's very reasonable for you to get exactly what you want. Many of the WDW resorts are worthwhile destinations on their own merit, even if you don't go to any of the parks. In fact, it's rather sad when families don't get to enjoy their hotels very much because they do such short trips and spend all of their time trying to "see everything" on an overly ambitious schedule.