Instructions are a back-up plan. roud:
That happened to me once when I was putting together an office chair, except--instead of some jerk stealing the parts I needed--I put them out of the way and completely forgot they existed for about 20 minutes...Instruction manuals are perfect for burning.
To be honest, i don't read them, but I don't burn them either. I just keep them in the box. The only manual I've ever read was for my camera, cause I couldn't figure out where to put the battery in, and the manual for the toilet seat. And it turned out, I didn't need it, some jerk just stole all the things you're supposed to use to put it on with.