I already had changed my career. After working in Children's Rights for a while I decided to get teaching credentials (MSEd) and ended up staying to earn an MSW as well. Now I work at the University teaching and social working. But - I am considering going for a public school job to free up some family time - probably after our adoption is final (I hope) I have a rather demanding job now - with travel and long hours - though great benefits.
I think it is probably natural that those of us who journey the difficult road to parenthood - acompanied by mounds of paperwork and not a small amount of judgement and scrutiny - would also be interested in helping people in similar circumstances - and especially children.
Go for it - if that is what your heart tells you. I may have been older than my classmates - but I had more experience and passion than any 20 year old!!
Missy