[lolinder]

There are a few reasons why Wi-Fi is not my first choice:

* I don't trust any company to use my Wi-Fi and not attempt to access the broader internet. A Zigbee or Z-Wave device isn't going to be able to stealthily update itself in anti-user ways, nor is it going to be hijacked into serving as part of a Bitcoin botnet.

* There are way too many devices, which can cause issues if they're all using Wi-Fi at the same time. Smart homes take a router that would normally be dealing with 2-4 phones and 2-4 laptops and add N bulbs, M switches, P contact sensors, Q motion sensors, and assorted random sensors. Not a chance am I hooking that much up to my Wi-Fi.

Z-Wave LR has worked very well for me—no mesh to worry about, just a controller and devices. The only downside is that it's not as broadly supported as zigbee or Wi-Fi.

[XorNot]

Put your IoT on a separate wifi SSID and firewall it.

My devices can't reach the internet at all, but I have easy access to them the other way.

[lolinder]

It's easier and has better guarantees to just... not have them on a Wi-Fi at all.