I actually have my place completely automated with Apple HomeKit compatible devices. About 15-20 light switches, front door lock, motion sensors, outside pot lights, garage door opener and lighting in the garage, smart thermostat, etc. I also have a Google Home that I got as a non-exchangeable gift that I use for a few tasks and as a Bluetooth speaker. I did a ton of research on both these systems and the Apple infrastructure works for me because all my devices are on it.
There's no real point getting into the Apple vs. Google debate, but what I can chime in with is that both these systems are more user-friendly and idiot-proof than Alexa.