I use the utility for 2 things. Volume animation and Widening certain sounds. Widening may be the wrong term to use here, so I'll give an example. I usually have a stereo drum mix that I like to use. I.E. So the drums sound like they're in the place they actually are on the kit. I usually pan the hi-hat to the left a bit, snare and kick always front and center, cymbals as placed throughout - such as ride on the right. Putting this to toms gives it a "roll" feel when doing rolls instead of just that roll sound. You can feel the toms moving from left to right (hi/low) for example. Not sure how much sense that makes, if any. I'm bad at explanations
EDIT: This does not mean pan it all the way. Just so it's a little more left heavy. You should be able to still hear all the cymbals and toms through a mono headset or one where the left/right earbud is not working.
If something is dancey or club-like though, I usually don't because a mono-mix is best in these scenarios. Depends on what you're making I woulds say.