I used to fill rooms but now I'm a tower, I can stay put or I can travel far. What am I?

Question

I used to think that I'm important
But now people tell me I'm not.
I can't even control where I'm going.
But I'm quite sure that it's not hot.
I cut in front of other shapes,
Going towards the light.
Now tell me, who am I?
While I wait in everlasting night.

Answer 1

A computer.
They used to be huge and desktops are now referred to as towers. They can be desktops (stay put) or laptops (travel far). The computer can run windows (sill) or it can be an Apple computer (fruit).