There's no ending to this. This is basically a full-circle around nothingness. You will learn almost nothing about me. But it was fun to do a meta-analysis of introducing oneself.

TL;DR
An introduction is a means to create an idea of who you are in the mind of another person. You choose what this idea looks like. That's kinda cool.

What does it mean to introduce yourself?

You are someone who has been forged in years of experience to become the person you are right now. You are trying to press all of who you are into a few lines of text. That is impossible. So you pick the most important -- or what you think are the most important -- parts of yourself and present them. On a silver platter.

If you introduce yourself, you never think about the bad things. You don't tell them you are depressed. Or that you betrayed an ex a couple of years ago. You think of the good things, because you think the good things matter the most. Because you want to make the other person like you. And that's normal, people want to be liked. But what would really matter to get to know you? Knowing the worst parts, or the best parts? Or something in between? The mediocre parts. Maybe you think you're good at drawing, but maybe you're only good enough to make a decent sketch, or to draw in perspective.

But what does it matter? They don't want to know that about you. They want to know what's relevant for them. That could mean what skills you have, if you're in a job interview. Maybe they want to know what things you're interested in, because you're on a date. But maybe you're just pretentious. Writing this out, trying to find a deeper meaning in a simple "Hey, I'm m4sc0 and I like coding".

So, what's important here? That the other person likes you? That you like me? Maybe. But I don't know who you are. Maybe you're my dad being proud of his son. Maybe you're a recruiter and you stumbled upon this page because you're in need of a developer. Maybe you're a friend who doesn't really care and hasn't read this far.

But does it really matter?

It does. Because different people want to know different things, again specific to the context of their life that you appear in.

A friend is interested in you as a person, to find common ground.

A recruiter is interested in what monetary value you can deliver.

And my dad, well, he's proud of his little Hosenscheißer anyways. :3

Who are you?

That's the more important question, isn't it? I could list every little thing I've ever done. My hobbies, interests, each and every specific skill or technology I've ever touched. I could tell you how good I am at love-making, but that would only matter if you find me attractive. And I'm gonna go out on a limb here, you don't.

So what do you want to know? No, what do you need to know?

Well, that depends.