Having used dos/windows for 17years, linux for 11 years, and mac for only the last 2, I wouldn't call myself a fanboy.
I use what works best for me.
Personally, I think dragging an application into your 'Applications folder' is pretty damn intuitive. I'm not sure quite how much simpler you could get. ok, it takes a couple of minutes to understand that it's mounted a disk image and you should unmount it, but after that you think "Yeah that's actually a nice way to do it".