Job information about Plumbers

Hey I'm not even sure if this is the right subreddit to ask this under to be honest but

I'm looking to become a plumber in the future. I have a general idea and how it works but I was wondering if anyone who sees this post would be able to answer a few questions for me such as is it a generally easy job? How much do you make per year? Does it take a physical toll on you? Is learning the concepts difficult and is ur day in and out job pretty stress free? Also most importantly what is the difference between just being a plumber and being a licensed plumber? Does being a licensed plumber make more?

thanks!

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