^^^^^^^^^It doesn't get much easier than running a self-contained program. You just drag it to your Applications folder, no installer necessary.^^^^^^^^^^
In linux, you don't even need to drag. You simply type in what you want(which is what you'd do in your browser anyways) then click click done.(with some processing time inbetween, unavoidable on any platform)
I find loading a program via clicking its icon or listing easier than typing its execution call into a command line.
Linux seriously needs to move away from that crap if it wants to be installed on desktops.