'Nope :) I don't want to "apt-get install" software, or "yum install" software, I want to be able to go to a website on my Linux Desktop, click on "download this application for Linux" and have it just install and work.'
When you say it like that, it sounds like you just want to be like everyone else, its worth examining why you want that. Im sure its deeper than just what buttons/commands you use to get a new app.
Perhaps what you really want is to be able go 'direct to the manufacture' rather than through a third party, to have a quality guarantee (you get want what others are getting, not a variation).
Or maybe you do only care are which buttons you press ?