There is no "reason" you shouldn't end it. Absolutely none.
Read Camus. Here you are, in meaningless existence. Wanting meaning, but Get experiences. Find pleasure and joy in things you never thought possible. If you can be sad watching the boulder roll down the hill, maybe you can be happy? If that can make you happy, maybe you can be happy, or content, or okay, with any moment. If you really want, you can die. That option will exist until the universe forces your to die anyway.
Who knows what to do.
Just think, for a blink of an eye, you are a tiny fraction of the universe that is alive. Sentient, Sapient, and alive in the here, now, this. Romanticise yourself. Why the fuck not? Believe anything you want. Who the fuck is stopping you? But keep in mind, certain behaviours that impede on social cohesiveness may end you up in some trouble you don't want to be in. Also, all the other alive parts of the universe are just as alive as you.
YOU ARE FUCKING ALIVE.
watch this guys videos: https://www.youtube.com/channel/UC_X7KWRY6ZF63LzjeXDyt_A
he has hundreds. he's a nihilist. search for any topic, he probably has a video on it. It might give you a unique perspective.
Listen to Mr Peanutbutter: https://www.youtube.com/watch?v=AfqTOhi7AnQ
live for the beauty of the world. live for the ugliness. live for laughter. live for tears. live for serenity. live for noise.
When you die, that's it (unless we're wrong about this world).
Why is suicide bad? I dunno. It's final. It's the last decision you ever make, so it has clout. Also, people miss you when you die. But they ultimately die too.
The choice is really up to you, but as this is the only time you're alive, cutting it short seems pretty lacklustre.