Yes, of course the
Disney Cruise Lines is worth using points for. I don't think I've ever seen a post on this board (or any other) saying the cruise was not worth the price.
But there are two other issues.
The first is whether a
DCL cruise (or Alaska cruise, for that matter) is the BEST use of your points, and I can think of at least two ways to look at that issue. One is, there is no question that you can pay cash, rent out enough points to cover the cash outlay, and come out ahead. That, of course, raises its own issue -- do you want to get into the points-rental business? If you don't, this argument is irrelevent for you
unless you have the option of paying cash and keeping the points for yourself.
The second issue is that cash ressies on cruises have a number of other advantages
besides cost. They can be made earlier than points ressies, they are much more flexible, and their cancellation/change restrictions are much less onerous than
DVC's. Those issues -- to me -- are more important than the relative value of points usage. They are the reasons why I would probably never use DVC points for a cruise.
But many have, and many have loved every minute of the experience.