[Johnny555]

If you make hard things easy to do, then people that don't know what they are doing will do it (poorly). They'll set up a server once, and never maintain or update it and it'll eventually be hacked and taken over by spammers. I set up and maintain our mail servers and work, and for my personal email, I chose to point my domain to Gmail to let Google take care of it, I don't want to expend the effort it takes to run my own mail server.