Exactly. Also, don't forget there are many other options besides just owning DVC. The off property timeshare options is actually a better choice for many, including many that would never consider it.
We did look at off site. We stayed at Hilton Grand Vacation Club Next to Sea World twice before we bought at BLT but we really wanted to be able to walk or monorail to 2 parks and have all of the Disney bells and whistles. We really liked the Hilton place but location won out.
I may have overlooked the point rental aspect in terms of cost.