... reading this makes me want a cheap film camera like this where pictures aren't just throw away, you have to go through a process to even find that the picture turned out crappy.
I borrowed a friend's old Canon AE-1 35mm. Not quite the same as the Holga, as the Canon was a nice camera in it's day. Anyways, my biggest "problem" using it that I've become accustomed to instant feedback with digital cameras. I haven't developed anything yet - waiting until I have a few rolls, as the closest shop that still develops in-house is a 30+ minute drive into the city.