AARP started losing members when they started supporting Obama and then Obamacare ,and there were videos of them not letting members speak at AARP meetings when they were opposed to what AARP was supporting. They actually had people thrown out of the building, when they were only trying to nicely express their opinion.
I belong to American Seniors, which is the more moderate version, and has about the same benefits for their members.
Since AARP has been around for such a long time, and they didn't used to be so politically motivated at first, they still have some of the extra discounts from places, that American Seniors, or any of the other new groups, doesn't have.
We get offers to join them all the time, and they all go right into the trash.