man all i know for myself is that i hate, no, detest cheating like fuck man a bastard son ...

Well, his wife was already dead for ~3-4 years by then, would that still count as cheating? Granted, he broke the promise... so maybe that counted as cheating... But the illegitimate child also has circumstances of his own. I feel like almost all of the characters in this story are so pitiful...

So you're saying that a different innocent child should die because of what their father did? The half-brother is not at fault for what happened, and should not be punished for it. Also, the mom was already dead by that point, so there was no "cheating" as you say.