When Siri first launched, it was, to say the very least, a little bit clunky. You couldn't really trust what was going to happen, so many people ignored the feature or even switched it off. These days, Siri has improved immensely and Apple have gone out of their way to include a whole lot of functionality that wasn't there before.
One of the things we love most about the newer Siri, is the ability to book a ride home through Uber or Lyft by simply saying "get me an Uber home." Great for those with physical disabilities preventing them from being able to press too many buttons. Also great for people who have had a few too many alcoholic beverages. Just make sure you've set where 'home' is within your Maps app. Siri will sort the rest.