It wasn't until Google took away the Nest API's
I've used OpenHab, LightwaveRF, and HomeAssistant in the past and the thing that really appealed to me about Hubitat was that I wouldn't have to worry about whether the container was running or the SD card in a raspberry pi was still viable (both of which have bitten me with HomeAssistant and OpenHab), and I'd be able to do more than just control the lights.
Zigbee/ZWave support give me 90% of what I need, Hubitat community plugins mean I can control my TV, XBox, Lights, Sonos speakers, get presence data from my Unifi Network kits, and even keep an eye on my 3D printer from a single hub, and the drivers available for the Device Access | Google Developers stuff mean I can control my heating as well, I just can't generate events based on my fire alarms any more.
Hubitat had this functionality in the past, Google has taken it away, and I'm struggling to find an alternative that doesn't involve me strapping stuff together.
I do enough software development and infrastructure maintenance during my day job, I don't want to do that stuff at home, I just want a solution that works for my (reasonably non-technical!) family and myself without having to troubleshoot stuff constantly - Hubitat is that solution that's halfway between HomeAssistant and Control4-style options, and I'd rather dump the Google stuff and find an alternative than start putting in more devices running extra software that I shouldn't need in the first place!