Depends on the culture where you are. In some areas girls do find it "weird/creepy" for a sober guy to hit on drunk girls. And for a lot of girls they'll find it too intimidating to escalate things with a sober guy (especially if he's out of her league) because they think he's more likely to reject them, or because that "we were both drunk, it was a fling" factor doesn't apply.

Like I said it depends on the culture though, I quit drinking and can still pickup girls at bars sober. The far bigger issue is being able to force myself to go to the bar in the first place and enjoy it. Quitting drinking led to a way healthier lifestyle so I'm usually asleep way earlier than 12-1AM, if I go out sober I'm simply tired and not having fun.

Expect to possibly get invited to events a lot less too. Many drinkers don't like having sober people around because it makes them feel shit about themselves (either consciously or unconsciously).

I stopped drinking when I go out when I was around 19 years old. I was blowing through so much of my money partying every weekend, mostly on Uber rides. I decided to just have 1-2 drinks and drive. Eventually, I just ditched it all together. I only need a few drinks now to have a fun time (when I’m not driving).

You can certainly still go out and party without drinking. I’d suggest you sip on maybe a soda or any other drink to both stay hydrated and also not seem like a weirdo. I always joke that I’m the “designated designated driver” when people ask why I’m not drinking.

I still talk to women, although I won’t talk to any that are obviously drunk. I can’t match that energy, and I still think others might find it weird why you might be trying to game the drunk while your perfectly sober.

I stopped drinking years ago out of necessity and let me tell you my game only improved since then.

Also, who said you can't go in a bar without drinking alcohol? If you are afraid of the stigma, buy a bottled beer, go empty it in the rest room and fill it with water all night long. But really, you shouldn't give a shit. On the contrary, if people ask about it, use it as an opportunity to tell a crazy story.

If you are given a shooter, forward it to someone you want to pull in your set.

As @TryingToReform said, being sober is like a super power. You can wrap your mind around all those drunk idiots and completely dominate them.