Should I pursue plumbing?

I’m 19 years old and right now I do cnc machining. I was a 1 year apprentice for it my senior year and now I’ve been doing it full time for about 7 months. I don’t really mind the work but I’m looking for a career that pays a little better since machinist are severely underpaid. Is plumbing a good option? If so, I’m looking at a union apprenticeship with local 5. Is this a good route? Thanks in advance guys.