I think Darcy makes an important point, though. For some of us, seeing numbers and keeping track helps us. For some, maybe not.

For me, when I get frustrated or feel a loss of biking joy, I try to do something different. Lately, I'm trying to sprint a little. I'm lousy, but it's fun to see if I can go just a little faster for a tiny bit.

Change it up, and totally ride for joy, with or without a computer, with or without caring about mileage, speed, or whatever.