Uhhh, no thanks. I have no desire to increase the amount of people who have control over my working environment and getting in between my employment contracts

Uhhh, no thanks. I have no desire to increase the amount of people who have control over my working environment and getting in between my employment contracts that I negotiate with potential employers. Having only one entity that can screw up my working conditions (the employer) is much better than having 2 entities that can screw it up (both the employer and the union.) When dealing with a single entity, the relationship is clear. I negotiate with them, and offer my work in exchange for a contract that we both agree on. It would screw up incentives to have a third party who has significant control over my mutually agreed contracts.