I don't even like to talk about this anymore.
I also judge my speed on one or two of the regular loops I do. Since they all end in a big climb up my street, unless I bust my azz, I check my average before I do the climb, and afterwards. So, on a "good" day on my 16 mile loop, with some rollers, my average might be 15.5 before the climb and 15 when I get in my driveway. Some days it's a bit less, sometimes a bit more.
I rode about once a week with Hirakikubou. We usually did 30-50 miles, involving climbing. Those rides, my average was rarely above 13.5. But, who cares. I enjoyed them more than most. Then there are the times DH pushes me... my average might get close to 16 or a bit above that. It's all relative and I have stopped obsessing on this. When I was doing that 10 mile climb in Spain, all I cared about was how slow I was going, so I could be assured that I would make it, without throwing up or fainting.