Although I agree that currently "points are points", it should be acknowledged that trading in the club window is subject to HGVC rules and fees that could change at any time. There is a line of reasoning that says that you should buy where you would like to stay e.g.
1) you can travel to the resort economically from where you live, and/or
2) you would not mind staying if fees or rules got to the point in 20 years that using your home resort is the most viable option.
For example, we currently own Las Vegas and trade for Hawaii, however if the HGVC rules changed, plane fares got prohibitive, or our health deteriorated such that we would need to drive, we would be okay with driving to and using our Vegas home resort. Although the HGVC Italy property is beautiful, traveling there every year as a home resort is simply not feasible for us.
A lot can change in 10 - 20 years.