My wife just finished her MA at the tender age of 53, which she ironically needed to keep her part-time job as an adult education instructor due to a state change in accreditation standards. Last degree-granting program I was in was my LLM which I finished about the time I was 40, myself (My third grad degree, and last, 'cause I just don't see any point in going for a PhD or LLD at this point).
I totally agree with cmypay.