Post drinking anxiety was one of the MAIN reasons I quit drinking. It became unbearable. I'm a worrier by nature on a good day and am really hard on myself. After a night of drinking, I was in full blown panic the next day for hours with a racing heart, obsessive thoughts (usually about what a screw up I am), the sweats etc.
The thought of experiencing the next day anxiety horror show prevents me from indulging in any alcohol. It just isn't worth it. Waking up fresh, calm (relatively!), and without any hangover/withdrawal symptoms is so worth it.