I feel like I can answer this because we are considering selling ours. A major reason is that I love hotels. I love daily maid service. I love nightly turn-down service. I hate the fact that you don't get fresh towels and clean sheets every night at
DVC reosrts, unless you pay extra for it. I thought when we bought that I would get used to these things (after 2 trips) and be okay with just washing our towels daily, but I didn't.
I also want to stay at different resorts at Disney. I want to stay at the POLY with the MK view. I want to stay at the BC or YC. I feel tied to BWV, which is our home resort. Don't get me wrong, I love the BW. It's just that last trip when we took the boat from the MK to eat at Kona, I was sad walking into the great cerimonial hall, knowing that I can't really stay here with DVC. I feel too much that my vacation decisions are decided for me for the next 30 some years and I don't really like it. When I told DH that I want to stay at the POLY in May 08, I expected him to talk me out of it, because of DVC. Instead he told me that I should book the trip I want and maybe we should sell our DVC contract. At the very least, we can bank our points. I booked the POLY. DH is now trying to convince me to switch to the YC/BC (his favs) and we'll do the premium plan. He knows I love premium plans and is just trying to get me to switch to his resort.
I want to go on a
Disney cruise maybe next year. Except that I know that I can't use DVC for that-way too many points-we are a family of 5. That makes me feel like we shouldn't do the cruise.

Or maybe we should just sell the DVC and than pay for the vacations we want to do. In 2 years we want to go to Universal-my kids are huge, huge Harry Potter fans. I know we will all want to stay at a Universal resort-and then that's another vacation not using DVC. We want to go to Hawaii in a few years when our DD 5 is older. I want to actually research and PICK to hotel we stay at, not hope for an aceptable trade through Interval.
In retrospect, buying DVC probably wasn't the best fit for our family and the way we like to vacation. After 2 trips at BWV, I am ready to stay somewhere else. However the only other DVC resort we would do is the BCV. I don't want to have to call at 7 mos day by day, go on waiting lists, etc. I just want to pick up the phone and call WDW travel and tell them I want to stay at the BC-done! I feel like using DVC every trip we would be settling for something that wasn't our first choice. I'm thinking DH is probably right and that we should sell. I have to admit that the thought of selling makes me feel happy-kind of like we'll be free to than do whatever we want with our vacations. I guess that's a sign we should sell.