Poll: Why don't you have a projector?

Seriously, what's stopping you from hooking up a projector and enjoying your high definition viewing on a 100-inch or bigger screen the way we all know you deserve? There's no arguing that bigger is better, so now that projectors are cheaper and brighter than ever there's less of a reason to opt for anything else. But there you sit, staring at your puny 50- or 60-inch plasma, LCD or rear projection unit pretending that it's actually getting the job done. Explain the reasoning to us below because frankly we just don't get it.