Joining DVC was one of the best things that Jill and I have done. We joined in late 2006 (Have a December use year at SSR), and have been 5 times since joining. We were averaging about a trip a year give or take, but now we can go several times a year. You will get a lot of advice from the DVC members here, both pros and cons. If you are planning on going at least once a year, then I would say do it if you can afford it. You will probably find yourself going more than once a year though, when you get the hang of the point stucture. I bet we could even get Meggin to fly up there and babysit while you and Eric sneak off for a trip by yourselves for a weekend or more.
I can't wait for DVC to open in California and Hawaii. I have never been west of Texas, but may have to save some money and plan a trip.
Research it. Think it over. Don't let the timing of the special rush you as they are doing special buy-ins all of the time. If you decide to buy in, let us know and we'll join there on your first trip "home." We'll be there waiting in YOUR villa...