Why everyone should learn Linux?

Getting straight to point.

It makes you self sufficient
It is free and will stay free forever
It is not bloated and usually very efficient
You can run Linux on old computers
Highly customisable
If you are a computer science student then you anyways cannot escape it, it is expected that you know Linux
You will learn how computers work
The world will be a better place
Linux is not difficult. There are many flavours of Linux
You just need to get used to it
You don't even need to learn commands but it is always good to know them
The last reason is the most important - it looks cool

How to get started?