We leave the headlights on all the time. Later models are equipped with automatic headlights (I know for a fact the 10+ GT has them - XLS and SE likely do as well). Auto headlights are really a nice thing to have, I had them in my Vue Redline and my new Grand Cherokee also has them.

I gotta find out if adding the stalk with the "auto" function will work. There's a light sensor in the vehicle already for use with the auto climate controls, and I didn't notice any extra light sensors on the newer models, so it may be a simple thing to add.