As someone who has only worked in "right to work" states, it always strikes me as absurd that people seek "job security" through a 3rd party agency rather than by individual performance and developing personal relationships. Honestly a big part of why I quit my last job was too many unproductive/unreliable coworkers. Am I just Stockholm Syndromed?
Working in Europe I have never been a member of a union but enjoy plenty of the achievements fought over in previous decades. Right now my strong market position as someone in a sought after field and with some experience under my belt I am able to negotiate an individual contract that exceeds collective bargain agreements (that's possible in most companies here). Members of my immediate family don't have that luxury…
Added benefit: working at rather stable companies with more or less solid financials.