How is Ubuntu any more or less user friendly than OSX or Windows? They're all so similar these days..
Your apt-get scenario only works if what you're looking for is in the official repositories. If not, you have to add those repositories first. That's a lucky menu find in the Ubuntu installer or some random add repo command with some possibly untrusted domain in it.
Then... You get random install errors. Missing so files or package dependencies etc.
Trust me, I've done more googling trying to install stuff on Ubuntu than I ever did on Windows. At least with windows if you had the exe or msi file you were dons 99% of the time. And you almost always found that file on the site for that program.
you spend a couple hours (not even really) setting up a few pieces of software.
Your reward is not to be saddled with unity trash until you realize it's a piece of crap and go back to windows (or OS X).
And IMO Unity is the better DE. But I wouldn't say Ubuntu is the better overall UX. OS X has my least favorite DE. But I think it has the better overall experience. I've been using OS X for about 2 years now and I can't remember a time it came out with stuff for me to solve.
On Ubuntu recently I had to change the default kernel it was using and recompile my graphic drivers after an update, not that hard a task but not something an end user should have to go through. I've used Ubuntu 12 and am now using the 14 and it really has improved a lot both on reliability and UX, but it may take a lot of work to get it to be reliable depending on your hardware.
My dream DE would be something like DWM but without the tiling stuff, more features included out of the box and written in a higher level language.
That said, as someone who used Windows 98 through 7 on my development platforms, my WTFs/minutes is very elevated on a Windows 10 machine.