Google Nest Community

I know that it has a cellular feature for making calls, but other than that I cannot understand why it is so much larger than the Nest Guard security hub that it replaces.

The Nest Secure is elegant and useful, and has Google Assistant and a mic so I can get the weather and stuff. It also has a motion sensor built into the hub. Will it just die? How long will it work after it stops being supported? Sad to see it go. It...