DH and I have been members since 1997, with our home resort at OKW. I wanted to buy it when we were there on our honeymoon, but DH(the realtor) thought we should save and buy a house first...how practical of him

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Anyhow, that's what we did...saved and bought a house first, which is why it took us until 1997 to buy points.
The positives...I like staying in a nicer resort. With DVC, you get the equivalent of a deluxe or nicer(IMHO), at a good price. I like the larger space, the washer/dryer in the room, the ability to do light, easy breakfasts and snacks in the room(DH and I do not cook full meals in the room). I like the fact that I do not have to come up with the big "chunk of change" all at once to pay for a regular resort. Our DVC payment is made monthly, which is very easy. Once it gets paid off, and all you're paying is the dues amount, the cost of it for the level of accomodations is almost ridiculous...it's cheap!!!!!! From a purely financial standpoint, when you pay off the cost of the loan is when it really begins to make the most sense.
The negatives...as others have pointed out, you generally have to plan your vacations a little in advance.I must say though, I did call them once 3 weeks before we were going to go and got a studio at OKW at the beginning of June with no problem! As a rule, though, some advance planning is needed. It is a big initial expense, or a long-term expense, depending on how you finance it. There are only so many DVC properties, so if you like to stay different places, then that does limit you. I kind of handle that by staying at a resort for the 2 expensive weekend nights(Friday and Saturday)and then moving to the DVC resort for the cheaper weekday nights(points wise, weekends cost more points than weekdays). That way, I get to experience a little of a regular resort and also get the benefit of my DVC. If you don't want to do a DVC resort every year or at least every other year, then it is probably not the right choice for you.
IMHO, it is one of the best decisions we have ever made. We did not base it solely on finances, as both DH and I feel there is more to life than finances. It may not make great financial sense, but it makes good financial sense, and some of the good times we've had there already with family and friends have made it worth every penny.