Mostly I went with Atlas because I enjoyed the people watching. Checking out the characters they had made, costumes and bios and whatnot. That was one of my favorite things to do, and Atlas had a pretty steady stream of traffic so I just kind of ended up there between other things anyway.
I did start in Galaxy a handful of times though, and it was pretty cool. I spent one
really fun night there hanging out with a newbie. He was brand new in town, like maybe a couple days, and he asked me how I was doing those emotes. So I showed him and afterward we street sweeped a bit, and mished a bit, and then we came back and just kinda hung around having a laugh. I don't think he ever logged in again, iirc he was on the 2-week trial, but that was a hilarious couple hours
I'd have started there a lot more if it had survived, definitely. After the revamp Atlas Park got seriously laggy for me and it started to become painful just to roam through there to pay base rent. I would've happily made Galaxy my go-to zone if I could've at that point. As it was I usually did all my parking in Kings Row.