Linus highlights several pain points with regards to desktop Linux.
From DebConf 14 https://www.youtube.com/watch?v=5PmHRSeA2c8
0:00 Application distribution is a huge PITA
2:52 Distros break things and ignore backwards compat.
5:53 Distros waste too much effort on package management
8:26 Linus roasts his own package maintainer
8:50 Windows has a better app distribution experience
9:29 Linux distros expect users to compile everything