Angsty, many years ago my drinking habits were like yours. Unlike you, I never considered quitting, always found an excuse to keep going with it. I didn't understand what was meant by alcoholism being a "progressive disease". I built up an unbelievable tolerance, while all my friends/family were able to have 2-3 & quit.
I'd worry about where your current lifestyle may be leading you. It was all fun & games for me in my early drinking years, but ended up a living hell. Not saying that would be you, but you're wise to be vigilant. Let us know how it's going & welcome to the family.