Programming is not possible without a computer. Computers have many advantages that make programming worthwhile:

Computers are fast: Computers are amazingly fast. If you know how to use the power of computer programming properly, you can do wonders with it. For a typical computer today, the addition of two numbers, each with a magnitude of one billion, takes barely a nanosecond. Read again – nanoseconds! That is, in 1 second, a computer can do about one billion additions. Can any human do this? Forget a billion additions per second, the average human can't even do 10 additions per second. Therefore, computers provide very good speed.

Computers are cheap: imagine if you want to do a lot of calculations manually, you have to go through a lot of trouble and spend a lot of money and hire people, which is impractical and illogical, and your cost increases significantly. Computers can process huge amounts of information quickly and reliably.

Computers can work 24x7: Computers can work 24/7 without getting tired. So, if you have a task that is big enough, you can leave it to your computer via programming without worry.