Very few people belong to an organization because they get "tangible benefits." They decide to support a worthy cause because they know the need exists. With the Union Meeting House it is a love of community and a respect for those who, in earlier times, created a unique historic entity.
Think of Readfield without the Union Meeting House which sets Readfield apart from all the surrounding towns and gives it a panache that is unmistakable. It is historic, artistic, cultural, and also serves as a community gathering place.
Please support simply because you know it needs support.