Does it kill the other one faster to only replace one?
Yep. If you touch the glass it will transfer the oils of your skin onto the surface and when it heats up it will explode...or something like that.
I dont blame you. I only change on bulb at a time. I just keep a spare
with me wherever I go. Rally shortens the lives of bulbs I've found out haha
By potato salad do you mean pizza? Cause Little Caesars has a deal going on