I used to work at a local psychiatric hospital. From personal experience, working there for years, meds like Haldol and similar are used far more often that I ever saw as necessary. Of course, no one asked my opinion. The reasoning..... Its a chemical restraint. It allows a higher chance of a calm and compliant patient and a far less likely situation where physical restraints are needed. In other words, they would rather medicate them when they are behaving erratically such as very high emotions or hurting themselves or others, than to have to physically hold them down for long periods. A shot is not really ideal, but preferred to hours restrained in a bed, chair or papose board.