Floor-to-ceiling windows - how to place the sofa?

I always wonder why people plan floor-to-ceiling windows only to place the sofa in front of them.

A fireplace at the corner of the kitchen/dining area is also somewhat pointless, because the full heat hits the dining spots and you always have to navigate around the fireplace.

I consider a fireplace on the upper wall at the exterior wall to be best for the LIVING AREA.