I think there are merits to both ways of looking at it. Until this point,
DVC has been a rather unique timeshare product in that contracts have tended to retain a significant amount of resale value (sometimes even increasing) with a robust resale and rental market. It's impossible not to think about these things when purchasing DVC, and it is this very aspect that has helped a lot of us on this board get comfortable purchasing when we might otherwise have been predisposed against timeshares.
But, it is still a timeshare - it's not an asset in the traditional sense of the word - although it is a deeded real estate interest, when you buy it, you are also purchasing a contractual obligation to pay annual dues for years to come that will far exceed any amount you can obtain by selling the contract. Disney has a lot of discretion to change aspects of the program that can devalue the resale and/or rental market (e.g., RIV/CFW/VDH restrictions or recent "personal use" box). It's not quite the same as buying other sorts of actual assets - cars, homes, stocks, bonds, etc. Sure, all of those things come with their own risks, but I think they can be known and forecasted in a way that a timeshare cannot. DVC might be one of the most predictable timeshare markets, but things can, and most certainly will, change. That's why, it's probably best to look at your purchase as a pure luxury purchase where you may never be able to sell it, but you can enjoy your
Disney vacations for years to come. But, human nature being what it is, we also can't help but think about the resale values and potential exit strategies and, naturally, do what we can to hedge against those risks.