Then there are fairly good projectors for like $80 or less
Um. You and I have a very different idea of “fairly good”. The only good projector I’ve used (at work, not my own) cost $12,000. It’s overkill for a home theatre, but not by a wide margin.
If you want a projector as bright as a TV you could buy for 20 bucks at a goodwill store, you need to spend quite a bit of money on it… especially if you also want decent black levels and of course significantly larger than a cheap LCD (otherwise why get a projector).
You also forgot sound. Good speakers aren’t cheap either. And you definitely don’t want the sound coming from the projector itself. Or from your laptop speakers.
Um. You and I have a very different idea of “fairly good”. The only good projector I’ve used (at work, not my own) cost $12,000. It’s overkill for a home theatre, but not by a wide margin.
If you want a projector as bright as a TV you could buy for 20 bucks at a goodwill store, you need to spend quite a bit of money on it… especially if you also want decent black levels and of course significantly larger than a cheap LCD (otherwise why get a projector).
You also forgot sound. Good speakers aren’t cheap either. And you definitely don’t want the sound coming from the projector itself. Or from your laptop speakers.