I hear you, but my genetics are corrupt and most people would never believe that I have lived through what I have. I would not want to relate any of the details. It would be irresponsible for me to father a child. Realizing that I don't have the emotional tools to deal with people on a normal level, much less raise a child, is something that I have come to grips with over a long process. My level of detachment and ability to withstand what would be torturous for most people makes me a good candidate to be a sort of martyr for those in similarly hellish situations but without the ability to express their feelings. You are right, and a wise old guy on the street told me something very similar, but this is "the work I don't want to do."
If you are genuine and not fabricating this homeless persona ("running to a chowline for lentis and rice", who talks like that?), then reducing everything to your "genetics are corrupt" is rather fatalistic and sounds like you're ignoring the real cause of your situation. If you truly would rather live in homelessness, then own it and acknowledge that it is your choice. Don't blame it on your genetics. You can't deal with people on a normal level because you don't have the emotional tools? Fine, neither can a lot of people and they find ways to work around that. You have options and aren't on a set course that you can't deviate from, so don't pretend or lie to yourself that that is the case.