Overall the most powerful way to make your home smart. However, that "Swiss army knife" always comes with a bit of a learning curve. The current approach to move away from config files to UI really helps though
For the past few years, I've been on board with HASS, and it's continuously improving. A huge thanks to everyone involved with HASS, including the fantastic community. I'm hopeful for a bright future because, quite literally, my home would be in darkness without it! :D
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.
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.
Been using for over a year. Home Assistant is The most awesome smart home hub out there.