14 hours is a long work day o_O
I work 8 hours a day, and commute on my fabulous bicycle. I'll still ride for fun & function on the weekends.
It's probably like the N+1 rule; N+1= how much biking you want to do. In this case, N=how much you're currently doing.
Of course, I'm still new so everything is still very exciting and I want to bike ALL the time.