I use and like the ambiences a lot. Why?
Maybe because of me forgetfulness. OK I describe the way I use it:

I have three ambiences in use. All are the same picture but dyed in a different signal colour:
Red: Ringtone 100 %, vibrations on
Green: Ringtone 20%, vibrations on
Blue: Ringtone off, vibrations off
I use the volume control settings patch to uncouple the volume hardware buttons from the ringtone setting. So they only control media volume and I can't adjust the ringtone by accident.

So every time I look at my phone I immediately know how my phone works at the moment. If I see blue colour and don't want to miss a call, I have forgotten to set it in the right mode again after the last meeting. And yes you can tell me you can see that on the ringtone Icon. But no, this icon is so tiny, I would oversee it all the time.

So if you ask me, I don't want to miss ambiences and I'm not a powerpoint man.

So claiming that noone is using ambiences, just because YOU don't use them is wrong. I definitely don't want to miss them and would be grateful, if Jolla would work on them further.