Not any super user but about three/four months, I'm using my device without any google account. Also not using any G service apps such as mail/yt/maps and of course play store. Instead of play store I found aurora store very helpful. "Very" because of the anonymous login future. But sometimes the store disturbs. Newly added apps on Play store doesn't appears on aurora. Also many applications fails to be installed without showing any reason. Some shitty apps redirect to the play store app (which I'm unable to disable but uninstalled her! Updates) and just doesn't works anything more then redirecting me. So I'm still not a fan of Aurora. But it's going not bad. But sometimes I should browse other sites to get old/delated from Play store apps. Also for mod/adless version of some apps.

I heard of fdriod but what I think it may only serves feature less, low UI/UX optimized apps. So didn't installed it yet. But something should be available where people can find all Play store apps (as aurora supplies) + premium/adsense deleted modified apps (random website) + Open source apps (fdroid)…… this will make android insane