OP this is not a comment about you - it's a general observation from personal experience.
I nearly gave up on a friend because she was a heavy drinker and constantly, constantly pressured me to drink. I drink very little - don't really 'get' alcohol, but enjoy a nice half glass with a meal....and I was always on the lime soda or orange and fizzy water, and perfectly happy.
From the pov of a sober person she was a total bore and PITA after nearly 2 bottles. She thought she was the life and soul, but really she wasn't. Her speech slurred, her face contorted, she couldn't stand and was rude to people, including me. When I saw her on say Monday, there would be another sob story about why certain people were blanking her - and she'd be wondering what she'd said and done. Several friends were lost that way.
I have no room to criticise her for her addiction - I eat far too much sugar!! But she'd ask me for advice and I'd say 'Can't you just have 2 glasses and then switch to a soft drink?" She said she definitely couldn't.
The happy ending is that she did get a grip on her drinking and confined it to Fridays and Saturdays, watered down her wine and stopped after 3/4 glasses. Things are much better now, but I still avoid seeing her on the nights she drinks because I know I will have one hell of a boring evening, she will talk absolute crap and not remember anything the next day. I make excuses because I can't bring myself to say these words to her, but her drinking does still make me avoid her sometimes.
That's why spending time with drunks is a total waste of your life.