Retirees don't take jobs from anyone, and by building their dream homes here employ people at livable wages. You claim to want more jobs but only suggest big polluters come in an destroy our environment the way Rayonier did. Our relatively pristine environment (compared to California) is one reason these retirees come here, and you better hope they continue to see this area as an attractive alternative to retiring elsewhere. 
They contribute above average taxes to our local government as well, making our infrastructure and services better for all of us, including you, and also (I know you'll hate this) fund government jobs. Construction and gov't jobs pay better than the average wages here and so stimulate the local economy, creating more jobs and services, etc. But if it has a smokestack all you can see it belching is dollars, right? 
If the retirees were sold their lots with the seller's promise of adjacent land being kept as open space then that promise must be kept.