Every time they have to hire a new screener, they have to spend money on training. If the job of screener is well-known to be unpleasant, they'll have to start paying the screeners a higher salary to compensate them. If passengers routinely opt for the time-consuming manual patdown instead of submitting to the pornoscanner, they'll have to hire more screeners to cope with the demand. Each of these things make the screening process more expensive. If we make it expensive enough perhaps they'll stop doing it. There doesn't seem to be any other way to get rid of it.