I never used to think about it, but after 30 years of
diving from simple recreational to advanced
research type
diving with mixed gases, I have now been a DAN
member (as an individual) for the past three years. I just recently added my daughter and wife by upgrading to a "family plan" and since we'll be diving in some very
remote and uncivilized locations, I like the added
security and peace of mind just knowing if something happens I can get an air-lift for "free" to a chamber for anyone of us.
In my opinion, YES, it is worth it, but only if you use it once. It's like
insurance, don't like paying for anything you don't use, but damn glad to have it when the bill collector knocks on the door for dollars and you're trying to save pennies.