I on the other hand have financed vacations, but usually just a short term to pay it off. We were fortunate and we initially financed and ended up rearranging things to have it paid off in no time (about 3 months). We had looked at DVC before, but didn't do it. I am happy and sad about that....lost so many memories that we could have had.....but also we were in a better place when we bought.
I don't think it is awful to finance, but I think it is something to think about. I spend about ten years in awful debt, due to unemployment and other things. I didn't stop having fun and vacationing some (small ones here and there) but we were fortunate to be able to get out of that debt and I work hard to stay out of it. I guess, the moral of the story is not everyone is fortunate enough to slap down the full amount, but it can still work and even provide savings for long term vacationing, if you do it right. But think real hard about it. And don't be discouraged by what others think you should do....remember you can't please all the people all the time......