Maybe they fixed things in the last few years, I have no idea, but last time I had to use Gnome 3 it broke existing DE muscle memory of using all sorts of environments across all sorts of platforms, and made it hard to discover how to change anything. Having to then install third party pieces to achieve minor change is not something I feel is an adequate replacement, particularly coming from systems where easy, built-in configurability comes as standard.
Again, if that all sounds fine to you, more power to you. To me it's an opinionated DE that tries its best to push its own ideas of usage on the user, and hides any/all options behind an API rather than exposing them to the user by default.
Why would I bother with such a DE when I can find one that supports what I want to do out of the box?