We bought 14 years ago when the kids were 14, 12 and 7. We had taken a few trips with them prior to purchasing (even when I only had two).
Oldest is now 28 married and has his own 100 points and is more of a disney addict than I am.
Middle one 26 will be married this year - he has gone with his fiance and another couple (our points), and with us and other family members.
My dd is 21. She celebrated her 16th birthday there. We invited three of her friends. Once just dd, her friend and I. Last year (Jan) she did the College Program and was there working for 8 months. She will go back in her heartbeat.
Over the years we have gone as a family, with friends and family. We have also cruised 5 times (some points/some cash) but most importantly, dh and I now go by ourselves. Mostly F & W but a few other times also. We are going down next month just the two of us.
I am sure we will be sharing it with grandchildren (first one arriving early June).
Plans change, families change - I think it will be a great place to share/enjoy alone, as couple or with family or friends. When and if it does not suit our needs, we can downsize, sell, cruise more or exchange.