There are probably a few more less common cases out there - we had a "transition loan" for about a week waiting for cash we knew was coming to arrive. It was a timing thing and probably not great, but not horrible given the source of the money and where we were financially. I think we ended up paying $17 in interest.
We did this when we moved last, it allowed us to close on the new house ahead of the old so we could move without having to figure out where to put our belongings between. It was a stress at the time, not because of the bridge loan, but because we were on the hook for two houses for two days. We also paid probably $15 in total interest.
For me, I get aggravated when people try to claim ALL financing is ALWAYS bad for luxury items. Now, you might make the case that it is now because of the times we live in. But back in 1996, in our case, where we had no kids, a small mortgage, and two very stable jobs, we saw our window of opportunity that would not be there once we had a child.
True, some luxury items have to be financed (2nd homes at the lake, a boat, a plane, etc.) typically. I think the previous poster's summary caught the big gap in this situation. DVC (and timeshares in general) appeal to that 3rd audience. The people who probably can't or shouldn't afford the type of vacation that the timeshare offers more so than some of those other items do. When you take that trip to Disney and you're in the middle of having such a great time -- you want to do nothing more than come back (and have a reason to come back).
I don't thinkg that group is represented heavily here. People who take the time to research, understand and learn don't put themselves into that situation. So far, most of the people here appear to pay their loans off quite quickly compared to their terms.
Often times, I don't think it's the DVC itself that puts people upside down, it's the unaccounted for costs - more travel costs (gas or plane tickets), more food (and expensive food if at the parks/resorts), more tickets, etc.
I don't think most of the "don't finance" people are trying to be "high and mighty" (at least I'm not), just trying to be sure those thinking about it aren't in that 3rd category.
We did think about financing our recent purchase. We could have done a larger points purchase then we did, and had things gone south, paid it off with other savings. Our decision was not to, to make sure we didn't have to dip into other funds/monies that we may want use in other places if need be.
Again - it's a personal decision and hopefully everyone makes a smart one, for real, not "smart" in their heart but not their head.