Never used wooden needles, so I can't help you there. I have had my bamboo needles warp after a time, but it never rendered them unusuable.
I have accidentally bent aluminum needles myself, but that was more me being dumb than the project causing it. Also, I have a lot of pairs of Boye aluminum straights that I still use from time to time. I used to use them all the time, though, and on some of them, the paint wore of the tips and they got a rough edge.