Maybe I'm being a little arty, but what I like so much about my polaroid and 35mm cameras is the limited amount of pictures I can take. Not only can I take a picture whenever I want (without having to wait for my digicam to boot up and focus), I have to decide whether it's worth one of my 10 polaroids per 15 dollar pack. I'll take my digicam to a tourist spot, sure, but if I'm going to the park I'm packing analog.
You're that much of a security nut that you won't open up the ports for steam? Might as well just shut down all http access while you're at it.