I thought of another reason that I am more comfortable with the data projector now. It's not to say that I use it every day, by the way, but that it's less cumbersome when I need it.
My classroom is part of what used to be a convent, and not a standard size and shape. My students' desks are only a few feet from the front wall, so the projector, in order to be far enough away from the screen, must be in the midst of the desks. Awkward for presenting. I have not complained about this to anyone, because I don't want anyone to tell me that I should use a different classroom, or heaven forbid, travel to various available ones throughout the day. I like my classroom for various reasons, not the least of which is the view.
Then along came the e-mail from one of our media center folks last year (thanks, Larry D.!) asking if we wanted a long cable to connect the computer to the projector. Yes! Now I can stand at the front and look at my students while I am projecting (and so can students), and it makes a very big difference.