Amen. Amen. Amen. Good lord UI on many apps is horrible. Not just Linux, but it's the biggest offender.
I used linux as a desktop OS when RH was still 6.2, and 7.0 and didn't have 'enterprise' in it.
Then I gave up, got a Max because it's core was unix-based and never looked back. I'm sure many people like the roll your own of linux and I learned a ton using it and apply it at work every day, but when I get home and want to goof off shit just need to work and other than clicking a few times to install something I don't want to watch something compile.
I'm sure it's gotten better, but still, to this day, if a GUi starts on Linux I'm lost as to what to do in it, and open a command prompt and do everything from there.