I talk about Linux a lot and very often hear that people who tried Linux move back to their Windows installation. It is, in my surroundings at least, very rare that somebody switches to Linux completely. It seams that Linux is not yet regarded as a primary OS by the main audience. In past times the reason for this was obvious, the installation of Linux was difficult and required a lot of tweaking to get it work. Also there was no real support other than user forums. I myself love the concept of a friendly and helpful community but it is not every bodies cup of tea. Especially people who don’t speak the language of the digital world have to take a big step before they post a question on a forum. Since a few years the support has improved a lot. You can buy distributions like Suse which are packed with a guide. Also the installation has improved a lot, though it isn’t perfect yet. No, there has to be another reason why people stick to Windows.

Source: Why people stick to Windows®