Because as someone who is very sensitive to alcohol, I have spent my adult life resisting pressure to drink more. I often end up with 2 day hangovers, because yet again I have allowed someone to convince me that one more drink won't hurt. If this works I will be using it...
Be sure to read the rest of this thread (and possibly the link to the Reddit discussion), it seems that while it might prevent drunkness, it doesn't do much to prevent the hangover part.
