In real time I only care about cadence and HR, when I wear my HR stuff.
I do record my ride times, avg speed and distance for every ride along with weekly, monthly and yearly totals. I do this on an excel spread sheet. Doing this is fun for me, I track my best times and once a month or so I will select a commute or ride where I try to set a
PR, or a
PR for the year I'm in. I will also try to beat a
PR regarding weekly or monthly totals.
It is a motivational tool for I have always enjoyed competition and there is really no better competition than with oneself.
It is enjoyable and helps me get in better shape. I don’t share the info with anybody; my family thinks I’m silly.
+1, I also keep track of HR during trainer sessions in the winter to make sure I'm getting enough intensity. I don't use spread sheets, I use SportTracks.