I used to be a rum-and-coke sort.
Started with a more coke and rum drink, then eventually you just pass the rum near the coke. By this point, I think I'm amazing, but my friends have stopped talking to me and I haven't noticed. I was regularly told, later, that the sober people usually had a bad time, and didn't enjoy it. Originally I would just scoff, and tell them they should have drank too... but not anymore.
Since my friends have made it clear that I am not welcome/appreciated when this happens, and since it always happens when I drink (I'm an a-to-z drinker: No sense getting a leeetle tipsy, in my mind), I just... stopped drinking. Been without since the day after Hallowe'en. I also stopped drinking soft drinks (because they remind me I like to drink), and stopped drinking fruit drinks like apple and orange juice, too (just thought 'why the hell not', help me lose weight).
I'm not reeeeally happy with this decision, but in tandem with the other things I've given up, I'm hoping it will help me feel better overall/lose some weight, and at least my friends have fucked off about it... even though I'm annoyed by that, too. And although I was welcomed to attend the parties again when they heard that I had stopped, the parties suck now, and I don't go to them because a: I'm sober, and b: most of them are, too... waste of time.
Still love the gang, but just play D&D with them now, every second weekend.