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.
A lot of integration
Easy to setup (see hass.io)
Some slowness/issue using the front end UI on different OS
Difficulties to have a nice organisation (UI)
Works out of the box on raspi. Not the easiest configuration but therefore it is free
Free, open source, supports a lot of devices, Alexa, Google & Apple Home support
need some it knowledge
Been using for over a year. Home Assistant is The most awesome smart home hub out there.
Lets me plug in any smart home device and control it through Home Assistant
It is improving in a rapid pace. Seems to mature with every new release. Not saying it was bad before but they just made some new stuff up that is even better.
Gives me more power than out of the box solutions
Can be tricky for new players
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.
solid amount of integrations
quite a lot of documentation
documentation often is outdated
each upgrade has ~80% risk of breaking your instance