Ranked in these QuestionsQuestion Ranking
Pro Free access to great development IDE in Visual Studio Community
Pro The most solid choice for .NET development
Pro Widely used
Windows is the most-used OS in the world.
Pro Best support for Visual Basic
Pro Ubuntu bash shell
Con Weak default terminal
Con Most software is closed source, including the operating system itself
Con Uses more resources than most alternatives
Con Lacks package management
It is not easy to install/keep current development packages that developers need and use.
Con Limited in it's flexibility
Window managers, startup systems, and system components cannot be changed.
Con Binary incompatibility between MSVC versions
Con Scanning for viruses makes builds slow
Compiling a project means reading and writing a lot of files. Even fast anti-virus software slows down the build time (which is almost always too long).
Con Embarrassing to give talks
On conferences or in user groups the audience laugh at speakers presenting their talk on a Windows machine.
Con .Net doesn't have backwards compatibility
Users will have to install multiple versions of .Net in their machine for different applications.