I think we'll find out eventually that alcohol does not lead to better aging - and that current results are due to  
correlation without causality. 
  
I think we'll also discover that this abstainer makes the best fucking martinis and mai tais in the universe.   
  
One thing about booze - its got a shitload of empty calories, and, because you drink them down, your don't get 'full'.   
  
For anyone over 40 who wants to maintain or lose weight, reducing or eliminating booze is easiest and most effective change they can make.  The hard part for me was sorting through all the crap leading up to the decision.  Once it was made, no problem.     
  
Its a myth that abstaining somehow erodes quality of life.  I found alcohol dulling, boring, and painful.  My experience has been nothing but positive.  Definitely one of the best things I ever did.  
  
Although I am an ordained minister now, that's enough preaching. Just my experience. YMMV.