Welcome to SR!
It sounds like the physical part of alcoholism hasn't hit you, YET.
YET stands for You're Eligible Too!
Pretty much every thing you read on this forum about the physical decline in our bodies from heavy alcohol use will eventually happen to you. There are biological, chemical, neurological, and other changes that occur with all of us as we age. Alcohol abuse adds another dimension to the aging process and brings it's own set of issues. If you are drinking 15 drinks a night, every night, it will catch up with you. You are not immortal.