What makes you so much better than the garden variety junkie? What puts you at the top of the "social ladder"? Being a middle-aged school teacher that can't even keep his wife happy? LOL

If you really cared you would not be rushing to get a divorce. If you really cared you would not be looking down on your wife and you would not be judging her.

By the way, it does not sound like she is a meth addict anyway. She is probably just turning to alcohol to escape an unhappy marriage.