Because its your brother, your family and he hasn't done it yet and he didn't know before he was the one who killed him and when he did he couldn't accept it, because he loved his brother. Its what you call a second chance in life. It may not be easy but if there is a they could change for the better. why not forgive??
you wouldn't know that, until it happened to you. Imagine your mom killing someone for her selfishness but at the same time thinking it was for your sake. You would wish she didn't do it, that if you could, you would redo the past.
thats what happened here. he still didn't do the crime that was supposed to happen (except for fckin choking him death) its forgivable for him. but thats him. And honestly may seem absurd but i wouldn't know what to do too. It depends
how can u forgive so easily a man who killed and then tried to kill you/your lover again wtfff