I am from Newton. As far as the Massachusetts area goes, it is about the nicest place to live except for Beacon Hill or Back Bay. Newton is a pretty, safe area which is outside of the city but close enough so that you can commute to Boston for work, school, the theater, etc. Moreover, Newton itself has plenty of shops, restaurants, and theaters which will give you fun things to do after hours despite it being in the suburbs.

That said, I do not come from a well-off background so from my own experience the degree of affluence in Newton may be alienating when initially moving there. It is expensive as well. However, if you can afford it and are looking for a nice place near Boston to raise children, it is a fine place to live.