Me neither.
I love this thread as it gives great insights into all the different characters on here and as ever there are no wrongs and rights re targets etc.
The only thing I record are distance and average speed data. I have monthly & annual targets but that is it.
The guys & girls that have all these targets/co-efficients/challenges/strava this/strava that/magic numbers I find utterly fascinating and some of the feats they pull off are astonishing.
It's not my bag but I really admire their focus, enthusiasm and dedication to their hobby/sport and love reading about it.
I think I am just too lazy to compete on the same level.