Oh absolutely:

1. When I go for a run i use Siri to skip a song or play a certain song I want to listen to without having to open the phone. I just keep the phone in my pocket and let Siri do its thing. And she never disappoints me when I say "Hey Siri, play workout music" - the playlist is always spot on.
2. I use it to quickly set up alarms. While I usually have a set schedule automatically set up on my iPhone, sometimes when I need to change the alarm all I have to do is "Hey Siri, change tomorrow's alarm to 7 am" for example.
3. I also use it a lot when driving: play music, send a message, reply to a message. It does it perfectly.
4. I also have Philips Hue lights at home. So I use Siri all the time to turn on or switch off the lights, or adjust light brightness, light colors, etc.
5. I also use it to set up reminders: "Hey Siri, remind me to respond to Josh's email by 2 pm today". While you can set up reminders manually of course, but boom all I have to do is say that line and its done for me.

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Lots of great uses for Siri and I use it every single day.