Well, for me the end was somewhere 2 years ago. Each day since I am grateful I found Hubitat. The only thing I have left on ST is a fridge (which will stay) and 12 virtual temperature sensors with my own custom DH. These sensors (and the app that remotely updates them) will probably stop working end of this year or shortly afterwards. Only reason I kept them this long, for reasons I don't know, ST is the only platform I am able to integrate these devices with Google Home and ask, "Hey Google, what is the office humidity?". Aside from that, ST can drop off the edge of the world for all I care. I already found an alternative work-around for temperature using HA.
So, what about everyone else? Do you still have custom ST devices/apps and if so what are you going to do with them?