Day drinking at 55, healthy and happy

I have loved my wine, tequila, and other spirits since a teen. Now I typically day drink a bottle of red wine every Saturday, make supper, eat, then coast my buzz until bed time. However some studies would consider more than 4 drinks per setting for females as alcoholism. Pfft. I am as healthy as can be, my yearly medical tests show good liver function, no diabetes, excellent blood pressure, moderate chloresterol etc. In my youth basically also would drink at least every Friday or Sat, usually danced it off with seldom a hangover because I drank lots of water and ate well before and after my binges. I will like taper off in a few years, like most older adults, but enjoy it. Why stop enjoying life?