Feeling Driven...or Not

I’ve had a driver’s license since the age of seventeen,
Yet I haven’t driven anywhere in years.
My parents would’ve given me a car; I wasn’t keen,
Even with its automatic-shifting gears.
I never drove so well; I had to take the test full thrice,
And I think the final tester had a reason
To be generous, aside from little areas of ice:
He reminded me it was the Christmas season.
I can reach most destinations by the bus and/or the train,
And my family can help me reach the rest.
If I owned a car, I might forget some features to maintain,
And the local parking’s really not the best.
In addition, I need exercise, and so I like to walk,
Whether all the way or to and from the stations.
Thus my license serves as only an ID; now you may balk,
But I think it fits my common situations.