I remember, when I used to ride a bike fairly frequently, I installed a little odometer on the bike. After each ride I would total my mileage and time in a spreadsheet. Then sometimes I'd forget to do it and freak out a little. Soon my hobby became more about accounting than riding. Finally I got sick of it and pulled the odometer off the bike and was able to go back to enjoying the experience of the ride itself rather than the record of that ride.