Probably because in most cases, doing so requires a tradeoff of some sort. Hardware, design and planning, upkeep, data privacy and reliance on external factors/services etc.
So when it doesn't fit together and people don't even have any real source of help (not to mention enshittification) it should be no wonder that the existing way (or "live with it") is the only real option.
Also there is also the angle of some "easier" options that sound nice on paper but end up creating their own problems (or are just too expensive to be viable).
Honestly, I live a slow life. Time is the main thing that I have. I dabble with programming, but not really for android and I don't even use a "smart assistant", I don't even have mobile service due to cost and lack of need.
My idea of making life easier was ripping the carpet out of my room. It is much easier to sweep a wood floor and I can do it at any time.
Even the things that I would want to automate in my life I don't think I could make a robot to accomplish it (honestly, I have a dusty 3D printer after upgrading to a beta dual extruder pushed complication a bit too far for me, as I already disliked the design/tolerances iteration process).
My main issues right now are related to living on the edge of nowhere, no way to meet people+nothing to do, no ability to move (without being homeless), low water pressure, polyester clothes/sheets that don't get clean. None of those are really fixable with automation. EDIT: Also (lack of) healthcare. That could be automated (particularly just for better-than-nothing) but not by me, obviously.