Same with me, I would go out with mates, they'd all pick up and I never did, so would get dropped off home at 2am, pretend i'm heading to bed, wait until the coast was clear, then jump into my car, drive 6 suburbs across to an adult bookstore and sit in a booth waiting for cocks to poke through the hole.
By that time of night/ morning, there were only guys who coudn't get laid, small cocks or really old, lonely men...I mean 70 & 80 yo or married shiftworkers. The area had a strong middle eastern/ arabic demographic, so a lot of the married Turkish/ Lebanese factory shiftworkers were quite well hung. But I never cared, I was so horny i'd just suck whatever was poked through. I think if I had a dollar for everytime I said to myself afterwards that was the last time i'd be rich. I did it probably 35 Saturday nights a year for about 3 years.
I used to think/ tell myself it was all anonymous, but after so many times, even if I parked blocks away, i'd see men who knew it was me that just sucked their cocks minutes earlier.
I was totally addicted to it and was next to impossible to stop until I finally got a girlfriend where I got some sort of sex.