Why programming is cool...

I think programming is so cool because we don't want to invest anything except our effort to solve problems which are very important in real life but when compared to others trains like different engineering we need some primary investments like to buy some goods or to get some machinery and some other kind of stuff to start up but in software industry we need only the knowledge to solve problems by using a programming language or a software to show you can just solve problems by sitting in front of your computer and just make a solution that that's it so easy .

thank you very much.