Let me tell you some big things…
1.Every time you surf over the internet ,then who gives you this beautiful INTERNET where back end contains millions of server.
2.75% of stock exchange all over the world runs on Linux.
3.95% of super computers runs on Linux.
4. ATMS,Super secure systems even your embedded watch runs on Linux.
5. BTW..your beautiful MAC operating system is derived from UNIX which is also parent of LINUX.