Nothing cures the blues like killing 30 or 40 bad guys. Bad guys make elaborate inventions to kill the good guys, but never stick around to see if it works. Christmas Eve and Halloween night last for three or four days. Movies based on true stories are made up. Police never wait for back-up.
Undercover cops are too good to be spotted.
Private detective work is glamorous. All baseball games will be won with a home run in the bottom of the ninth and two outs. All police killings are in self-defense. Everyone wins in Las Vegas. Good guys don't do drugs.