I suppose an MA works for me. more so than a regular job, simply because it keeps me interested. Probably more so than most other things.
I think working while you're learning keeps the job interesting and just brings a lot more diversity to what you're doing. It's really worthwhile doing, it keeps you captivated, it keeps you interested and actually works towards something.
I think working towards something, in all aspects of life, is probably a great thing to do.