RE: OUTLAW no more...
Of course you have choice. You can fly somewhere else.
AMA membership is a small percentage of what most of us spend on the hobby each year. I tend to believe that the AMA keeps my overall costs down. You're new enough that you probably don't understand the difficulties of securing and keeping a flying field. AMA insurance puts land owners at ease, and allows them to say "yes" to us. Without that, each club would have to negotiate for its own insurance, and also ensure that each club member secured their own personal insurance. Good luck with that!
I fly at a public field. Without the AMA, the county parks department wouldn't feel comfortable allowing us to operate.
Look at the big picture, if you can.