I am immune to alcoholism

Now this may sound pertinacious but I drink a lot cause I love to drink. But on multiple occasions I’ve drank pretty much everyday for like 6 months straight but the minute I’m like I don’t want to drink I stop instantly. Alcohol could be in front of my face but I’ve never felt an addictive drive I drink when I want and stop when I want. If it help I had a very alcoholic father, also I have adhd which should make me more addicted of anything. I just wanted to know if anyone had or has a similar or the same experience.