It is also about shaping the future.
Look at the current 3E vs. 4E war. A huge part of the war is about defining the future of D&D. Neither side wants to lose the things they find fun about their edition.
Similarly Mac vs Linux vs Windows. Support for an operating system translates into resources for that operating system which makes life better for those people who use that system. So users do their best to evangelize and raise more support, especially for the smaller systems.
Another example is programming languages. The more popular a language is, the better support you have, like IDEs and compilers. So if you really like a specific language, it is important to drum up support for that language, because it will eventually make the environment better for you.
Look at the current 3E vs. 4E war. A huge part of the war is about defining the future of D&D. Neither side wants to lose the things they find fun about their edition.
Similarly Mac vs Linux vs Windows. Support for an operating system translates into resources for that operating system which makes life better for those people who use that system. So users do their best to evangelize and raise more support, especially for the smaller systems.
Another example is programming languages. The more popular a language is, the better support you have, like IDEs and compilers. So if you really like a specific language, it is important to drum up support for that language, because it will eventually make the environment better for you.