Generally, society gives a free pass to antisocial / psychopathic behavior until and unless it passes some artificial boundary. That boundary is flexible and varies from place to place and time to time. In our present culture, pyschopathic tendencies are in fact generously rewarded in many instances (politics, business) and it actually takes a serious transgression (axe murderer) to get nailed.
Of course, the big problem here is that personality disorders and actual mental illnesses exist along a complex, non linear, unstable gradation. Sure, you've been 'antisocial' or even worse at times. Sure, you have been depressed, perhaps even temporarily psychotic. But most of the time, I will assume, that you're behaviors (and thoughts) hang out within two standard deviations of the population. There are clearly people at then ends of the curve - they can be pretty darn scary. There are even more people (assuming a normal distribution which seems to be applicable here) who push at the boundaries of 'normal'. It's these folks that you see in jail or just not doing well in society.
It's also these folks that modern psychiatric care attempts to treat but really doesn't have a great track record for doing so. Some of these people would do better in an institutional setting but that is a complex, morally hazardous and tremendously expensive method that has a track record for being systematically abused.
Take your pill and be happy, comrade. It really is better that way.