Some punctuation and spacing would go a long way to making your posts easier to read.

That said...

The reason clubs require AMA is liability insurance for the most part. Most land owners whether private or public, require liability insurance for anything organized to operate there, its just the way it is in our lawsuit happy society. While they could certainly say "require x dollars in liability insurance" checking on that and proving it with a copy of a policy that only a lawyer could understand becomes problematic, the easy solution is to show an AMA card thus proving you're insured.

On top of all that, you're also helping fund the organization thats trying to keep us out of the pervue of the FAA and DHS.