I relate with the situation you're in. I constantly fantasise and wish for it since I see it as the only way to escape from my situation, my life, and maybe most importantly, myself. If anything goes wrong or anything bad happens, at least I can always off myself. And since I lack the energy to go through with it (and because of SI) I just view suicide-related content for some degree of satisfaction, hoping that one day that could be me and I'd be brave enough to go through with it.
Come to think about it, this is kinda like my childhood when I wasn't allowed to play games, so I'd just watch hours of other peoples' gameplay on youtube. Nothing better than living vicariously through others, or in the case of suicide, not.