There's a time for everything, but in my experience, it's much more common for young runner's to err on the side of too fast. Short answer is do your own thing.
Long answer is to stop thinking in binary terms of either "workout or easy day." There's a larger spectrum of useful stimuli. My rule of thumb is that when I'm far from competition, my average pace during the week is faster, but my quality workouts are much easier than they will be later. (Still fast, but longer recovery and less volume.) As I approach competition, my workouts get harder and it becomes more important to keep the pace under control on other days. But even then, I still do a mix of what I call recovery (4-6 mile shuffle), easy (6-8 miles slow enough to completely zone out), steady (6-12 miles at a comfortably fast clip that leaves me feeling strong), and steady-hard (6-12 at a slightly uncomfortable pace that wears me out but doesn't put me in oxygen debt). Realistically, there are even more useful paces, but that's enough for record keeping purposes.
I'd also add that your event is a relevant consideration. The longer your event, the more important your pace on "non workout days" becomes.