Why take a job where you would be working with a language that makes you miserable? It would be bad for both you and the company when you leave in several weeks.

I've turned down a job before specifically because I didn't want n years using MUMPS on my CV.

(Okay, they didn't actually offer me the job, but I would have turned it down anyway.)

What? Lack of maturity? You only live once. I'm not going to spend my formidable years toiling away with tools that make my miserable any more than I would work for a manager who thought yelling/bullying was a valid management technique.