What legitimate reason does Apple have for not updating Snow Leopard? All I see is a company trying to force unnecessary hardware or software purchases on peopl

What legitimate reason does Apple have for not updating Snow Leopard? All I see is a company trying to force unnecessary hardware or software purchases on people. Most people just need a web browser and an Office suite, they don't need the new features of Mavericks or the latest hardware. It's only 4 years old. Microsoft's Windows XP is still supported until April 8th, after 12 long years. Disappointing for Apple.