I have two wall sconces in two rooms. Same sconce. Use a halogen bulb
120V 150W type T.

Room 1 I always have the sconce on. Room 2 the occupant likes to keep
it dimmed half way. That room always need replacement bulbs sooner.
In fact, I replaced them at the same time, and I have since replaced
room 2's bulb twice without having to replace room 1's. Funny thing
is, room 1 have the light turned on much longer period of time, it
should burn out much sooner and it's not. The only difference is -
room 2's light is always dimmed.

Is this possible?

MC