I only have two problems with voice, one of which is UX related: 1. It's slow. Apple AirPods are a good example. Siri controls the volume. Talking is slow. The

I only have two problems with voice, one of which is UX related: 1. It's slow. Apple AirPods are a good example. Siri controls the volume. Talking is slow. The input and response until the volume is changed is slow. Faster would be to use the long side of the AirPod as a touch control and sliding up and down it changes the volume. One finger slide = volume change. Two finger slide = track change. In any case, touch controls are way faster than voice. 2. It's weird in public, and faulty in loud environments. Talking aloud to yourself is going to get strange looks at you. I tend to do things that don't bring me attention, so I don't use Siri. Also, good luck using Siri at a concert or loud train commute.