I in fact run a AD domain controller *and *a rhel IDM controller. For me other then it is fun to play with, makes it a load more simple to manage the user accounts of my famalie. Also auto mounting network shares and setting a few policys for updates and security is great to from a central location. having SSO for many if my services also makes it more easy to use for the fam. The rhel IDM controller I use to manage a few user accounts. I also use it to manage the ssh keys and set sudo rules on all my servers.