I'm not saying it'd be good if acetaminophen got you high, just that one of the reasons it's still OTC is that it doesn't get you high, so there's no one champing at the bit to crack down on it, the way they robbed us of the highly-effective and fairly-harmless pseudoephedrine for the one and only reason that it can be illicitly turned into a street drug.
That's reasonable. My concern is that during my lifetime I have had my access to useful medicines with zero abuse potential restricted because of (imo) panics that it could be turned into street drugs (pseudoephedrine), and also because of panics (imo) that it is too hard on my body (Torodol), and of course because of panics (imo) that they will turn me into a drug addict (opiates). The last class is admittedly worth being cautious about, especially with the more potent forms, but all of these drugs have legitimate medicinal uses and people suffer when they are taken away.
(Also, for drugs that you have to take to get through the day, the lack of a buzz is a definite benefit, and not just because it closes off one argument for restricting them.)