I rode 4300 miles last year and 3300 the year before.
I ride at a leisurely pace at whatever cadence feels natural. I often average about 10 miles in an hour which includes stops for photo ops. and/or chatting with other cyclists or hikers. I firmly believe that any pace that's fast enough to maintain balance and keeps you from tipping over is fast enough to qualify you as a bona fide cyclist. Of course, that's just my opinion.
Perhaps you could ask yourself why you ride and then just set out to accomplish those goals, as we all tend to have our own individual reasons for cycling. In my opinion...be it for speed, endurance,weight loss, basic transportation, recreation, or meditation....it's all cycling and it's all good.