I tend to naturally do that as well. Either a track is stereo, and then I don't even think of restricting its panning (if I had pan knobs like in PT maybe I would think of it, but I don't usually have that option in front of my eyes), or is mono, and it's either center or hard panned.
I would just maybe use quad track guitars (the secondary tracks) to 90%, or harmony vocals if they are more than 2. Some solo, artistic and creative ideas would get moderate panning, or extra tracks which are not the foundation of the mix, like a melody on acoustic guitar which is only a support to the chorus melody, things like that.
All the rest, always hard panned. Like, a single stereo pad synth would be centered, a couple of different pad synths would be 100% hard panned for maximum stereo image. The few stereo tracks would take care of the "in between" panning. Like overheads, the different drums would create enough moderate panned content for my ears and the spot mics would be placed accordingly.
I don't know if that is good or not, I just naturally went that way !
A thing I like not hard panned, is when there are two solists, either two guitars, or say Children of Bodom types of leads with guitars vs synth. I would usually pan a solist left 20/30% maximum, and the other one Right. For some reason, I always put myself left when I have a choice and I think it is because my left ear is more analytical than the right one and when i focus on a sound, I listen with my left ear a little bit better !