I don't have a smart phone or GPS device or however else you guys know you're going 17 mph or whatever at any given time. I don't even wear a watch. On the weekends when time allows I enjoy riding on and off road, but I just ride. I don't worry about breaking my speed records, because I don't have any.
That's not to say I don't push myself and try to get stronger and faster. I do that constantly. I just don't write it down or otherwise keep track.
I have enough complicated stuff like that to tend to in other areas of my life. Cycling to me is a return to simplicity and an escape from the real world for a little while.
I know I'm on the bike about an hour a day during cycling season - sometimes more on weekends - and that's all I need to know.