If you're a good worker -- your work experience would be very different. There's no business that wants to get rid of and mistreat a good worker.
It can be argued that government has no reason to be involved in education, but leaving that to address your union views... I have thought about what you believe quite carefully, and what I believe is that unions survive because many of their members sincerely believe they could not make it in the private sector. Given that some members have no choice and must join, and some are good and could make in the private sector, and some other extenuating circumstances, I stand by that.
What you, and many socialists - not you, do, is take the isolated incidents where a worker is fired unfairly and use that as a broad brush to demand union protections for all employees. This is a cure worse than the disease in that yes, life is not fair, but making it fair means handicapping the taller, faster, smarter, driven, hard-working folks. That is socialist. Yes, some workers are treated unfairly... But getting a union involved in this leads to Europe. Is that what you sincerely think is best for our country?