The Middle Aged Mountain Bikers Association is not about age.
Middle age is just a state of mind or an attitude.
It's about responsible mountain biking. The honeymoon is over for our sport and it's time to settle down and start acting like grown ups. That's what we are about - acting responsible, taking care of the land we use, and fixing what we have broken. If you use the land you have to take care of the land. On the other hand maybe you don't care about the widening of trails.