Good question. I chose it initially because it was open source and way easier (in my eyes) than Apache. I don’t recall the others being an option at the time, or I was not aware of them. nginx does what I need without complaint, so I haven’t switched.
Gitlab uses a ton of resources and is a pain to setup. Once you get it going, it’s fine.
Going to echo what others have said: Use Gitea or Forgejo instead if you can. Both have runners you can setup like gitlab, but they instead mimic github actions instead of gitlab ci/cd.
I run a semi-private gitea instance, and have not had any problems past the initial setup in 2+ years.