Everyone is right you are not lucky. I actually just watched this PBS documentary about addiction and one of the scientists said that having a naturally high tolerance for alcohol is one of the major factors that ups your chances for becoming an alcoholic. If you have that plus family genetic predisposition for alcoholism your chances of becoming an alcoholic are 60%— that is pretty much the highest your chances can be when you come out the womb. I had both.
I never, ever threw up or got sick from alcohol (but I did get hangovers). That did not stop me from blacking out, passing out, falling over, etc. I always wished that my body had some sort of natural stop mechanism, like, I'm throwing up, stop, don't keep drinking to blackout. It isn't lucky. In fact it ups your chances for a problem.