Google is super easy to use and genuinely makes my direction-challenged life a lot easier. Even if I can't always look at the map, the voice guidance is often enough for me to feel confident about where I'm going. I love the route optimisation (one can optimise for fastest and/or most economical route) and we often check Google Maps even to destinations we're familiar with because the traffic/ travel time is so current.
Google Maps works great in cities and developed countries, but there are some issues in developing countries (although that may be down to the chaos that often reigns in developing countries' roads). Also, sometimes we change the settings and don't know how we did that or how to change it back. For example, voice guidance won't be as frequent.