Can you imagine how terrifying that must have been? Could you imagine how devastated B would have been, to come home and see that A had hung himself in B's garage?
How miserable does a guy have to let himself get to do such a cruel deed? I couldn't keep on going if I came home to find a loved one had intentionally taken their life. In the very home I sleep in, no less.
Bottom line, I kind of hate A for that. I'm supposed to love him, but I don't. I don't know him, and I can't forgive him. If you have nowhere else to go, if you're trapped, if you can't find any peace or joy, then I won't force somebody to keep on going through the motions of life. But at least be kind to those who love you. Don't let them see it. And for goodness sake, leave a note explaining everything. Tell them you love them. Don't let their last sight of you be a horrific one that will traumatize them for good, because that's the most despicable thing one could do.