My best advice - do some math.

Run some numbers and do a quick estimate of how much you would spend over the next 10 years in
Disney vacations. Then, pick some resorts and room category, add some inflation values to the next several years, and total it up to compare that to what you would want to pay for the appropriate amount of points that would get you through a standard year. To figure that out, get a copy of the
points charts for all DVC Resorts off the web and determine the point values for the type of rooms you are most likely to use when you stay with DVC. That's a way to see what you really need to spend to make yourself happy. We, personally, can't really live with anything under a 1-bedroom and often take friends in a 2, so we know realistically that we will burn through our points - especially with 2 -3 nights a year at DL resorts, too. If you think you want to try out the other resorts, and not just your home one - we do that all the time, make allowances for that, as some DVC resorts burn more points/night than others.
I've been a member for 15 years (this month to be exact

) and I have never had any issues whatsoever. I even won the deed in my divorce from my first marriage (and boy was he mad)

! I bought when living in Missouri in 1993, moved to Los Angeles in 2000, and have used every single point of my 250/year! I would say that my investment actually paid for itself (in actual room dollar costs) after the first 3 years.
Best of luck and if it fits your families needs, Welcome Home!
Nancy