system
Given the following post, respond as if you're commenting on Reddit:
human
[40k] I'm a young blank who needs a purpose in life. Help?

I'm a young man born on an Agriworld, and I gotta be honest, life's been tough. When I was born, my parents got so freaked out by my mere existence that they threw me out, and it was only by the mercy of the Emperor that I managed to survive off of mouldy Grox Burgers and eating rats. For a time I tried to get into an orphanage, but they all kept on beating the shit out of me, and after that I became a wanderer but then got chased out of every village by an armed mob, and ever since I've been living in caves and pinching whatever I can find to survive.

Recently, I've found out that I'm apparently something called an 'Omega Minus' Blank, whatever that is, and that's apparently the cause of my problem. As a God-Emperor loving citizen of the Imperium, I want to do my part to support mankind however I can, but I don't know if I can do so due to my affliction. Being a farmhand is obviously off the table, but I fear that if I attempt to join an offworld crew I'll get my head caved in by a bolter round. I'm running out of options - what can I do?
gpt
Stay alive until the next psyker tithe. If the Black Ship has any sort of psychically sensitive personnel on board (and they will), they’ll know where you are. 

From there, it depends on what they decide to do with you. You’re not a woman, so the Silent Sisterhood is out. If they think you can handle the training, you would likely be made into a Culexus Assassin, frying psyker brains at the behest of the High Lords of Terra. Otherwise, an Inquisitor might see fit to add you to his retinue — a powerful Pariah is an excellent answer to hostile cultists and daemons. 

And if you’re really, *really* lucky (or unlucky, as it were) you might be made into a Psi-Titan pilot for the Ordo Sinister. Again it’s very, very rare, and you most likely wouldn’t survive the processing.