How and should one start up a Mopar club?

Let me tell you about the Mopar club we started in Topeka. About 8 years ago, a small group of Mopar guys were talking at a local cruise night, and a few of us said, "Let's start a Mopar Club." I printed up some flyers giving a time, date and location for a meeting to discuss it further. We placed the flyers in several Mopars. and we had about 20 people at that first get together. We decided to do it. We did it right. We had several meetings to lay out rules and bylaws and filed the proper paperwork with the state for tax purposes. For a few years, it was pretty good. We sponsored an all Mopar show each fall at a local Mopar dealer, and met at a restaurant monthly. Then it got to the point where the same corps of folks (me included) did ALL the work on everything. And the people who did nothing did all the griping and bitching. Then most of the people just wanted to get together once a month and do nothing else. The last meeting I went to was when the people who did nothing were crying and whining about how much work the car shows were and that they didn't want to have them anymore. WHAT?? They never even raised a finger. Several of us (the worker bees) dropped out after that. The club dissolved a few months later. What is the secret to a good club? I don't know, but with 60 members, you cant have 50 of them constantly griping and bitching about not wanting to do anything.