I've been using a projector in my bedroom because I do occasionally want to watch something while laying in bed, but don't generally like a TV in the room.
Potential problems, all fixable:
Can't see it during the day or when using the lights.
Had to run power and data to the ceiling.
Lower resolution for the price.
Can't use the wall for anything else or need to install a screen; paint choice a potential issue (bad color, too glossy). (Also need a wall without windows that is large enough.)
That said, the pros vastly outweigh the cons for me and projectors have gotten cheaper and better in the near decade since I installed mine.
Potential problems, all fixable:
Can't see it during the day or when using the lights.
Had to run power and data to the ceiling.
Lower resolution for the price.
Can't use the wall for anything else or need to install a screen; paint choice a potential issue (bad color, too glossy). (Also need a wall without windows that is large enough.)
That said, the pros vastly outweigh the cons for me and projectors have gotten cheaper and better in the near decade since I installed mine.