Why would you want this? Do you have trouble noticing when it gets dark, or does it use up too many calories moving the switch? This is a bit of technology, "because we can", not because it serves any real useful purpose. It can also be dangerous.
Auto lights will often turn on as you pass under trees, or bridges, then turn off again shortly after once back into the light. This can cause others to think you have given way to them, so they will pull out, or pedestrians will step out. Although the lights stay on for a short period to try to avoid the "headlamp flash" syndrome, it still relies on others paying attention.
Scenario:
A vehicle is waiting to emerge right from a side road into a busy main road, near a bridge.
As you pass under the bridge, your lights come on, but the other driver is at that moment looking the other way. As he turns back towards you, he sees your lights go off and assumes you are giving way. He has not seen how long they had been on. This coincides with a gap in the opposite traffic, so he pulls out and you hit him.
This is exactly what happened to a Wiltshire police car within 2 hours of its first journey. Two policemen couldn't understand why a van had pulled out in front of the cleanest marked police car in the county. Van driver couldn't understand why the policeman would signal him out, then keep going. Wrote off both vehicles.