We have several legacy products still running on CF, all running rock solid, but also all ported to Lucee these days. I still like CF but I'm an old fogey that started with it in the late 90's Allaire days. I often wonder if it had been open source from its inception if it would have grown faster than PHP. It really was a 'swiss army knife' of web development. It's still around here and there but mostly in larger corps that don't blink at Adobe's crazy licensing fees. Most everyone else in the communities I talk to has jumped to Lucee.
Peep this, I stumbled on it randomly last week and also was surprised that it still seems to be around and kicking. It’s basically a Rails for cold fusion lol.