I'm a little concerned about telling him about going to Al-Anon
Does he
not know he may be drinking too much?
Would he be angry that you want to be more comfortable in your own skin?
Would he resent you gaining knowledge?
Would you be resentful or hurt if he elected to attend a meeting about learning to live with a wife you love even though she doesn't share or enjoy your habits?
And if the answer to any of these is "yes"...doesn't that speak volumes?
IMHO honesty is always the best policy.
Please do not feel you're
"supposed" to be deciding whether or not to leave him
Many many women cherish their A's and still lead happy and joy-filled lives. There is no one-size-fits-all answer. All marriages are different, what one might view as wonderful and "right" might be seen by another as horrid and "wrong".
We all walk our own paths and the choices we've made or are contemplating are very individual ones. It's important that you do what is right for you...and ONLY you.