What do people think of Home Assistant?
I use now for at least one year. I can control my heatings, my lights. Integrate late product as Ikea Tradfri really quick. The UI could be bad but it is so easy to integrate with Alexa or Homekit (with homebridge) that we can allow this issues.
I've been using Home Assistant for a long time, but I'm about to drop it as it just breaks way too much. The most annoying part are upgrades - you have to spend around 3-7 hours fixing problems introduced by each new upgrade as HA team doesn't care about compatibility at all.