I accept that it happens just not that it happens a lot. The post which you replied to reinforces what I'm saying, you should read it again, and read exactly what was said, slowly , especially at the end here it is again for you...
"While very rare, I don't believe this attempts are the urban-myth some make them out to be, although many may feel terrible the next day and suspect such 'spiking' of their drinks, but its usually because of the cheap bootleg liquor they have been drinking"
So its not exactly the point your were trying to make at all is it ? "very rare" pretty much what i was saying