Depends on the resort for us. We enjoyed being at PVB enough that we could go a week without going into the parks. We would spend time at the pool, lobby area, visiting ther resorts, and going to DTD. If I golfed more often, I could see more time on the courses.
When we can easily walk from your resort to a park, it would be too difficult for us. BLT, BCV, and BWV would be too difficult for us to last more than a day or two.
Overall though, we would rather rent our points and visit other parts of the country and world than spend time at WDW without going into the parks.