I always use snaps. More often than not, I have one or more on at all times. After working in the industry for some years now, I've come to realize that I'm a part of a minority group of always-on snappers.
There are times however when I don't want to use them. Rather than have to click once to open the snap command, and then click several more times to disable my usual snaps, it'd be nice if there was a master on/off switch to enable/disable all snaps. Better yet, it'd be great if there was a keybind to do this (such as F3 for example, as with Autodesk products).