"Hello World" those two words to every software engineers is a rite of passage. You'll hardly find a software engineer whose first code didn't say those very words. I remember feeling like a parent when I wrote my first code (that ran). The phrase "Hello World" is the way software programs are taught to say "I'm alive".
As a software engineer, the process of developing software solutions is fraught with frustration. The feeling of relief you get when you code finally runs is one feeling that never gets old. A lot of programmers can swear they hate programming when the code is returning bugs, the moment the code runs successfully they'll also swear they love programming.
"Hello World" is the welcome mat to one of the world's most complicated love-hate relationships.