I have used Smartthings for 2 years now, It was good and mostly stable. When Hubitat came came out I was thinking Smartthings may step up their game and maybe add some things like simple backup restore functionality but I got tired waiting.
My only regret of switching over is I set up 6 or 7 dashboards yesterday, and then late last night Dashboard 2.0 came out Good Job on that Hubitat Team! It looks beautiful.
I thought I would miss having an app, But I have set up dashboards the way I like and it is sufficient.
Currently using life360 for presence, hoping Hubitat comes out with native presence in the near future.
tldr: Switch to Hubitat, Happy Customer!