I love how easy it was to get up & running with mean, as well as having access to many useful libraries that are not always included in other frameworks like Angular or ReactJS (like axios). It's also very fast! The documentation could be better for beginners but there isn't much out of date information online either so you can usually find what you need by searching through StackOverflow questions/answers - just make sure your question has been asked before because sometimes people don’t include enough detail when asking their own specific problem. You're getting all these benefits from one package instead of multiple packages such as reactjs + redux vs angular2+redux etc., plus its easier than using two different tools at once if needed.