Memberships cost less than a single tow or a DIY synthetic oil change... when you think of it like that, it's easy to justify.
When you join and people take their personal time to selflessly help work on your rig with you so that all of us can wheel together, you'll definitely realize the value.
But when a 'high from the hog' JohnVee takes his hand out of his mouth and uses his fingers to tear off a chunk of meat from directly behind the eye of a pig carcass and hands it to you and you eat it...and you understand why he's been uncontrollably drooling for the last 20 minutes, then.... and only then... you will see the value of that $40 a year.