It is addicting if you earn big money from it. Yeah maybe thay guy who took his life has a big debt that it comes to the point that he can't pay all of it. Trading can be a habit , a good habbit rather that can be develop later on in a positive way.
I was thinking of it too, he can just recover all of his losses if he has any big debt or problem in his life. Maybe he thought that taking his own life would escape all of his problems and debt. It is important that you are emotionally ready when trading in crypto.