I don't use alarm or ring volume. I use vibrations for those, their sound is always always muted, unless I unmuted them by accident.
Sometimes I do want to control media volume when I'm not actually playing any media.
I am aware the same question exists for another phone, but it's 5 years old. A lot has changed since then.
Since I use a Nexus 6P running stock Android (Nougat), I'm willing to accept answers that apply only to this specific situation as well.
I haven't rooted my device, so I won't accept any answers requiring that. I do encourage to post answers specificly for rooted devices, so others can find it anyway.