Generally, a person becomes an ex-member because they have sold, traded or crashed their R65, and don't see a need to continue participation. Still, they become ex-members of their own volition.
Although, conversely, there are members here who no longer have an R65, but enjoy the friendships made and camaraderie of the board and it's members.
And I've never talked to an R65 owner who doesn't hope to have another someday. I'm on my 3rd...