I guess it's different for everybody, reading the replies. I told EVERYONE, including my "bar friends" on my last evening out before I quit. Announced it on FB. Lol. It felt a little bit like that dream where you're in a public place and suddenly find yourself naked. (is that TMI? maybe not everybody has had that dream). But I suddenly felt accountable. I think the respect I received far outweighed the puzzlement.
As long as you live your "truth", nobody else matters. Congrats on your decision to quit and your bravery to get back out there and socialize.