When you built a house, the most important place that you built first was the living room, which symbolize your mental, you can face new people around or doing anything with a good mental, then you could add more rooms from the second important to the less important one like side terrace after that.
Then you would really need some light bulb that can light up those rooms inside your house. These light bulb are those important people in your life, and yes.. There will be a selected light bulb that can light up your living room, which also strengthen your mental.
And as a time goes by, technology and your social surrounding has changed, bringing you something new, some can stay, but some should be changed too.
But it looks like you've move a light bulb that once you used to light up your living room to light up your side terrace eh?
Yes, it was build there to complete the house but never really needed, and maybe you didnt even realize that the light began to dim