If you don’t need support there is no reason to use RHEL. I found CentOS to be better due to the fact I never had to mess with the stupid subscription manager. I went with the default DE for RHEL and while it looks like old Gnome, it is not. It is Gnome 3 in classic mode but it will remind you it is new Gnome. It is resource heavy and provides no benefit over MATE. Would I use RHEL in a business environment? Yes. If I was just using it at home I would go with CentOS.