I think the value of memberships is directly proportional to the number of nights you spend on the road. If you take a one or two week vacation once a year or do a half dozen weekend trips, they are probably not cost efficient. We tend do go off every year or so for a month or two and renew our KOA when we do, since when we're just covering ground we like the regularity of KOA's. (We like quirky, one off rv parks when we settle somewhere.)
The national park passes are good if you are planning a number of park visits.
You just have to determine what and how much you are going to do and then crunch the numbers.
2015 Crossroads Cruiser Aire CAF27RL, 2018 F250 diesel crewcab SRW 4WD short bed, Trailer Saver hitch with Reese adapter on Ford OEM underbed 5th wheel connector.