I have control over my stuff, its control via physical controls in the real world. I don't want to use an app that I have to get out my phone, open up, navigate and eventually control a thing when I can just change a dial or press a button.
Temperature is not for me, an important value to know. I already know if its hot enough to air the place out or not. Don't need to see a number for that.
The value for me in home assistant is not putting all my buttons into an app on my phone, it's on the connections I can make between things, it's the ability to make my home work for me, without having to constantly be doing things to make that happen, and if i do have to do a thing, I don't see a single reason as to why I would want to have to do that thing in an app on my phone.