How do you know you're addicting to riding your bike?

For me, I was sitting her planning my morning commute into work and just remembered that I had to go up to a northern suburb for a meeting at 9am (it's normally held on wednesdays so I'm all discombobulated). My reaction was the following:

1) Thinks: "Awww man, I wanted to ride to work today!" Followed by general feeling of disappointment.

2) I thought about if I had enough time to go to my meeting, drive home, then ride to the hospital. Which, is on the way home from the other place. So I'm going to drive past it, to go home and get my bike to turn around and ride into work.

#2 makes perfect sense to me.